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Carat Gem Lab

GIA Certified 9.71 Ct. Minor Oil Emerald Diamond Ring
GIA Certified 9.71 Ct. Minor Oil Emerald Diamond Ring

GIA Certified 9.71 Ct. Minor Oil Emerald Diamond Ring

Located in Chicago, IL

2.95 cts. Platinum, size 6.5 Carat Gem Lab: Thailand (Siam) indications of heating

Category

2010s American Contemporary Cocktail Rings

Materials

Diamond, White Diamond, Emerald, Platinum

18 Karat White Gold Ring with No Heat Star Ruby 6 Carat, Diamonds 1.83 Carat
18 Karat White Gold Ring with No Heat Star Ruby 6 Carat, Diamonds 1.83 Carat

18 Karat White Gold Ring with No Heat Star Ruby 6 Carat, Diamonds 1.83 Carat

Located in Antwerp, BE

Red, Cabochon Star Ruby, No indications of heating. Comes with Carat Gem Lab Certificate CGL28027

Category

20th Century European Artisan Signet Rings

Materials

Diamond, Star Ruby, Ruby, 18k Gold, White Gold

18kt White Gold Bracelet Set Necklace Earring Sapphire Diamonds  CGL Certified
18kt White Gold Bracelet Set Necklace Earring Sapphire Diamonds  CGL Certified

18kt White Gold Bracelet Set Necklace Earring Sapphire Diamonds CGL Certified

Located in Antwerp, BE

diamonds Together approx 17.13 Carat. Material: 18 kt White gold. Comes with Carat Gem Lab certificate

Category

21st Century and Contemporary Belgian Contemporary More Necklaces

Materials

Diamond, Blue Sapphire, Sapphire, 18k Gold, White Gold

Art Deco 7.99 carats Emerald and Diamond Ring in 18K Gold and Platinum
Art Deco 7.99 carats Emerald and Diamond Ring in 18K Gold and Platinum

Art Deco 7.99 carats Emerald and Diamond Ring in 18K Gold and Platinum

Located in MONTMORENCY, FR

magnificent emerald-cut Colombian emerald weighing 7.99 carats, accompanied by a prestigious Carat Gem Lab

Category

Early 20th Century French Art Deco Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Platinum

Platinum Toi & Moi Ring with 2.4 Ct Ruby and 1.55ct Diamond
Platinum Toi & Moi Ring with 2.4 Ct Ruby and 1.55ct Diamond

Platinum Toi & Moi Ring with 2.4 Ct Ruby and 1.55ct Diamond

Located in Antwerp, BE

, intense red, Comes with Carat Gem Lab certificate Diamonds: Cushion shape diamond 1.55ct G SI1 Comes with

Category

21st Century and Contemporary Artisan More Rings

Materials

Diamond, Ruby, Platinum

18kt White Gold Earrings with 21.42ct Sapphires, 5.09ct Diamonds, CGL Certified
18kt White Gold Earrings with 21.42ct Sapphires, 5.09ct Diamonds, CGL Certified

18kt White Gold Earrings with 21.42ct Sapphires, 5.09ct Diamonds, CGL Certified

Located in Antwerp, BE

pieces together 5.09 ct in total. Material: 18kt white gold Very secure fastening Comes with Carat Gem

Category

21st Century and Contemporary Contemporary Chandelier Earrings

Materials

Diamond, Sapphire, 18k Gold

18kt Yellow & White Gold Ring With a 9.93Ct Ceylon Cabochon Sapphire & Diamonds
18kt Yellow & White Gold Ring With a 9.93Ct Ceylon Cabochon Sapphire & Diamonds

18kt Yellow & White Gold Ring With a 9.93Ct Ceylon Cabochon Sapphire & Diamonds

Located in Antwerp, BE

sapphire 9.93 ct. Comes with Carat Gem Lab certificate. Material: 18 kt. white and yellow gold Ring size

Category

21st Century and Contemporary Belgian Artisan Fashion Rings

Materials

Diamond, Sapphire, White Gold

18kt White Gold Bracelet  27.33ct Sapphires, 9ct Diamonds, CGL Certificated
18kt White Gold Bracelet  27.33ct Sapphires, 9ct Diamonds, CGL Certificated

18kt White Gold Bracelet 27.33ct Sapphires, 9ct Diamonds, CGL Certificated

Located in Antwerp, BE

in total. Material: 18 kt white gold Comes with very secure fastening. Comes with a Carat Gem Lab

Category

21st Century and Contemporary Contemporary Tennis Bracelets

Materials

Diamond, Blue Sapphire, Sapphire, 18k Gold

18kt White Gold 59.31ct Sapphire, 17.13ct Diamonds CGL Certified
18kt White Gold 59.31ct Sapphire, 17.13ct Diamonds CGL Certified

18kt White Gold 59.31ct Sapphire, 17.13ct Diamonds CGL Certified

Located in Antwerp, BE

. Material: 18kt White gold. Comes with Carat Gem Lab certificate.

Category

21st Century and Contemporary Contemporary More Necklaces

Materials

Diamond, Sapphire, 18k Gold

18kt White Gold Ring 4.05ct Burma Ruby, 5.76ct Diamonds,  CGL Certified
18kt White Gold Ring 4.05ct Burma Ruby, 5.76ct Diamonds,  CGL Certified

18kt White Gold Ring 4.05ct Burma Ruby, 5.76ct Diamonds, CGL Certified

Located in Antwerp, BE

: 18 kt. white gold Size:51 Total weight: 10.6 grams, 6.8 dwt , 0.375 oz. Comes with a Carat Gem Lab

Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Diamond, Ruby, White Gold, 18k Gold

18kt White Gold 4 Ct No Heat Vivid Ruby Ring, 1.5 Ct Diamonds, CGL Certificate
18kt White Gold 4 Ct No Heat Vivid Ruby Ring, 1.5 Ct Diamonds, CGL Certificate

18kt White Gold 4 Ct No Heat Vivid Ruby Ring, 1.5 Ct Diamonds, CGL Certificate

Located in Antwerp, BE

Ruby, 4.02ct Comes with a Carat Gem Lab Certificate Diamonds 24 brilliant cut diamonds together

Category

21st Century and Contemporary Artisan Engagement Rings

Materials

Diamond, Ruby, 18k Gold, White Gold, Yellow Gold

18 kt Yellow Gold Ring with 2ct Sapphire and 2.8ct Diamonds, Estate Sultan Oman
18 kt Yellow Gold Ring with 2ct Sapphire and 2.8ct Diamonds, Estate Sultan Oman

18 kt Yellow Gold Ring with 2ct Sapphire and 2.8ct Diamonds, Estate Sultan Oman

Located in Antwerp, BE

Carat Gem Lab Certificate CGL28028 Diamonds: Brilliant cut diamonds together approx. 2.8 ct. diamonds

Category

20th Century European Artisan Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Platinum Asprey & Co Sapphire & Diamond Bracelet to His Majesty Qaboos Bin Said
Platinum Asprey & Co Sapphire & Diamond Bracelet to His Majesty Qaboos Bin Said

Platinum Asprey & Co Sapphire & Diamond Bracelet to His Majesty Qaboos Bin Said

By Asprey London

Located in Antwerp, BE

& Royal Blue Siam Sapphires together 23.5 ct. Comes with a Carat Gem Lab certificate (Report number

Category

20th Century British Artisan Tennis Bracelets

Materials

Diamond, Sapphire, Platinum

18kt Ring 4.83 Minor Emerald Diamonds CGL Certified
18kt Ring 4.83 Minor Emerald Diamonds CGL Certified

18kt Ring 4.83 Minor Emerald Diamonds CGL Certified

Located in Antwerp, BE

weight: 7.6 gram Comes with a Carat Gem Lab certificate, Orologio certificate, a presentable box

Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

Diamond, Emerald, 18k Gold

18 Kt, Earrings Minor Colombian 5.39 & 5.14ct Emeralds, Diamonds, CGL Certified
18 Kt, Earrings Minor Colombian 5.39 & 5.14ct Emeralds, Diamonds, CGL Certified

18 Kt, Earrings Minor Colombian 5.39 & 5.14ct Emeralds, Diamonds, CGL Certified

Located in Antwerp, BE

Emeralds, 5.39 ct. and 5.14 ct. Comes with Carat Gem Lab certificate Report number CGL17383 Diamonds

Category

21st Century and Contemporary Belgian Artisan Dangle Earrings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Beautiful 18kt Handmade White Gold Ring4.36 Ct Colombia Emerald Minor&Diamonds
Beautiful 18kt Handmade White Gold Ring4.36 Ct Colombia Emerald Minor&Diamonds

Beautiful 18kt Handmade White Gold Ring4.36 Ct Colombia Emerald Minor&Diamonds

Located in Antwerp, BE

Measurements: 23mm x 21.7mm Total weight: 11.8 gram / 0.415 oz / 7.6 dwt Comes with Carat Gem Lab

Category

21st Century and Contemporary Artist Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, White Gold

18 Kt White Gold Pendant / Hanger Intense Green Emerald 10.5 Ct & Diamonds
18 Kt White Gold Pendant / Hanger Intense Green Emerald 10.5 Ct & Diamonds

18 Kt White Gold Pendant / Hanger Intense Green Emerald 10.5 Ct & Diamonds

Located in Antwerp, BE

/ 0.675 oz / 12.3 dwt Necklace will come presented in a brand new jewellery box with the Carat Gem Lab

Category

21st Century and Contemporary Belgian Artisan Pendant Necklaces

Materials

Emerald, Diamond, White Gold, 18k Gold

18 kt. Gold Ring With 3.78 ct. Minor Emerald Cabochon, Diamonds, Sapphire, Ruby
18 kt. Gold Ring With 3.78 ct. Minor Emerald Cabochon, Diamonds, Sapphire, Ruby

18 kt. Gold Ring With 3.78 ct. Minor Emerald Cabochon, Diamonds, Sapphire, Ruby

Located in Antwerp, BE

, Sapphire, Ruby Emerald: Intense Green Minor Cabochon 3.78 ct. with Carat Gem Lab certificate CGL 15818

Category

21st Century and Contemporary Belgian Artisan Fashion Rings

Materials

Diamond, Emerald, Ruby, Sapphire, Gold

Adler Genève 18kt Gold 190 ct Emeralds Beaded Necklace, Estate Sultan of Oman
Adler Genève 18kt Gold 190 ct Emeralds Beaded Necklace, Estate Sultan of Oman

Adler Genève 18kt Gold 190 ct Emeralds Beaded Necklace, Estate Sultan of Oman

By Adler

Located in Antwerp, BE

ct. Comes with a Carat Gem Lab certificate, (Report number CGL28032) Diamonds: Brilliant cut

Category

20th Century Swiss Artisan Multi-Strand Necklaces

Materials

Emerald, Gold, 18k Gold

Necklace with 5.5 Carat Colombia Minor Emerald and Diamonds, CGL Certificate
Necklace with 5.5 Carat Colombia Minor Emerald and Diamonds, CGL Certificate

Necklace with 5.5 Carat Colombia Minor Emerald and Diamonds, CGL Certificate

Located in Antwerp, BE

Gorgeous Necklace Set With 5.5 Ct Colombian Minor Emerald and Diamonds With Carat Gem Lab

Category

20th Century Pendant Necklaces

Materials

Diamond, Emerald, 18k Gold, White Gold

Colombian emerald and diamond flank solitaire ring, circa 1925
Colombian emerald and diamond flank solitaire ring, circa 1925

Colombian emerald and diamond flank solitaire ring, circa 1925

Located in London, GB

a smooth D-shape shank. Marked platinum, circa 1925, accompanied by Carat Gem Lab report #CGL19347

Category

Vintage 1920s Solitaire Rings

Materials

Diamond, Emerald, Platinum

Adler Genèva 18kt Gold Necklaces 480ct Faceted Bead Emeralds CGL Certified
Adler Genèva 18kt Gold Necklaces 480ct Faceted Bead Emeralds CGL Certified

Adler Genèva 18kt Gold Necklaces 480ct Faceted Bead Emeralds CGL Certified

By Adler

Located in Antwerp, BE

Emeralds Both necklaces come with a certificate from Carat Gem Lab (Report number: CGL28033 and CGL28034

Category

20th Century Swiss Artisan Beaded Necklaces

Materials

Emerald, Gold, 18k Gold

Certified 17.81ct Colombian Emerald and Diamond Cocktail Ring in 18K Gold
Certified 17.81ct Colombian Emerald and Diamond Cocktail Ring in 18K Gold

Certified 17.81ct Colombian Emerald and Diamond Cocktail Ring in 18K Gold

By Claris-A

Located in Monte Carlo, MC

square emerald cut, certified by Carat Gem Lab, a highly regarded French gemological laboratory. The

Category

21st Century and Contemporary European Contemporary Cocktail Rings

Materials

Emerald, White Diamond, Diamond, 18k Gold

19th-Century Yellow Gold Duchess Ring Burma Ruby, Ceylon Sapphire, diamonds
19th-Century Yellow Gold Duchess Ring Burma Ruby, Ceylon Sapphire, diamonds

19th-Century Yellow Gold Duchess Ring Burma Ruby, Ceylon Sapphire, diamonds

Located in MONTMORENCY, FR

; accompanied by a Carat Gem Lab certificate Gemstone Details: Center: Pear-shaped old European diamond

Category

Antique 19th Century French Victorian Cocktail Rings

Materials

Diamond, Ruby, Sapphire, 18k Gold, Yellow Gold

Certified Emerald 2.7ct & 2.7ct and Diamond Twist Ring in 18K Yellow Gold
Certified Emerald 2.7ct & 2.7ct and Diamond Twist Ring in 18K Yellow Gold

Certified Emerald 2.7ct & 2.7ct and Diamond Twist Ring in 18K Yellow Gold

Located in London, GB

, dimensions: 11.3 x 7.7 x 5.4 mm each. With accompanying gemmological certificate from Carat Gem Lab. 82 x

Category

2010s European Modernist Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Boucheron Paris Solitaire Natural Unenhanced Burmese Sapphire Diamond Ring
Boucheron Paris Solitaire Natural Unenhanced Burmese Sapphire Diamond Ring

Boucheron Paris Solitaire Natural Unenhanced Burmese Sapphire Diamond Ring

By Boucheron

Located in London, GB

SSEF report #131307, Carat Gem Lab report #06105, and Gem Paris Laboratoire report #20131971099-1. UK

Category

Vintage 1930s French Solitaire Rings

Materials

Blue Sapphire, Diamond, Platinum

Tiffany & Co. Star Ruby Diamond Gold Ring
Tiffany & Co. Star Ruby Diamond Gold Ring

Tiffany & Co. Star Ruby Diamond Gold Ring

By Tiffany & Co.

Located in London, GB

, accompanied by Carat Gem Lab report #CGL11698. UK finger size L. Please note shipping to the United States of

Category

Vintage 1970s French Engagement Rings

Materials

Diamond, Ruby, Yellow Gold

Antique French Gold w/ Platinum Muzo Colombian Emerald & Diamond Navette Ring
Antique French Gold w/ Platinum Muzo Colombian Emerald & Diamond Navette Ring

Antique French Gold w/ Platinum Muzo Colombian Emerald & Diamond Navette Ring

Located in Montclair, NJ

:-- Laboratory: Carat Gem Lab Report Number: CGL27488 Weight: 0.9 carats Shape: Octagonal Dimensions: 6.3 x 5.6 x

Category

Antique 19th Century French Cocktail Rings

Materials

Emerald, Diamond, Platinum, Yellow Gold, 18k Gold, Gold

1.69 Carat Burmese Sapphire and 1.15 Carat Diamond White Gold Cocktail Ring
1.69 Carat Burmese Sapphire and 1.15 Carat Diamond White Gold Cocktail Ring

1.69 Carat Burmese Sapphire and 1.15 Carat Diamond White Gold Cocktail Ring

Located in Jesmond, Newcastle Upon Tyne

diamond ring is supplied with an independent diamond grading report card, in addition to a Carat Gem Lab

Category

Vintage 1930s Unknown Cluster Rings

Materials

Sapphire, Diamond, Platinum, White Gold

Mellerio dits Meller Carved Colombian Emerald Diamond "Chardon" Ring, 1940s
Mellerio dits Meller Carved Colombian Emerald Diamond "Chardon" Ring, 1940s

Mellerio dits Meller Carved Colombian Emerald Diamond "Chardon" Ring, 1940s

By Mellerio dits Meller

Located in Monaco, MC

, carved with melon fluting that creates depth and dimension within the stone. Certified by Carat Gem Lab

Category

Vintage 1940s French Retro Cocktail Rings

Materials

Diamond, Emerald, Yellow Gold

9K Yellow Gold Lab Blue Sapphire Victorian Ring
9K Yellow Gold Lab Blue Sapphire Victorian Ring

9K Yellow Gold Lab Blue Sapphire Victorian Ring

Located in Seattle, WA

Yellow Gold Setting Type: Prong Ring Size: 4.25 Band Width: 2.10mm Main Gem(s): Lab-Created Sapphire Main

Category

Antique Late 19th Century Victorian Fashion Rings

Materials

Sapphire, 9k Gold, Yellow Gold

C. Dunaigre Certified 10.63 Carat Cushion Blue Sapphire Diamond Ring
C. Dunaigre Certified 10.63 Carat Cushion Blue Sapphire Diamond Ring

C. Dunaigre Certified 10.63 Carat Cushion Blue Sapphire Diamond Ring

Located in Chicago, IL

. Dunaigre Gem Lab, Switzerland as a Ceylon (Sri Lanka) sapphire with no indications of heating The

Category

2010s American Contemporary Solitaire Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum, 18k Gold, Yellow Gold

AGL 16.22 Carat NO HEAT Natural Star Sapphire and Diamond Necklace Platinum
AGL 16.22 Carat NO HEAT Natural Star Sapphire and Diamond Necklace Platinum

AGL 16.22 Carat NO HEAT Natural Star Sapphire and Diamond Necklace Platinum

By Kiersten Elizabeth

Located in Southport, CT

Carats All Set in Platinum 950 Total Gem Weight 17.87 Carats Lab Certification Detail Larger Star

Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Diamond, Star Sapphire, Platinum

Colombian Cushion-Cut Emerald, Transparent with Minor Oil, Gübelin Certified
Colombian Cushion-Cut Emerald, Transparent with Minor Oil, Gübelin Certified

Colombian Cushion-Cut Emerald, Transparent with Minor Oil, Gübelin Certified

Located in New York, NY

Gübelin Gem Lab. Cut in a classic cushion shape with a modified brilliant style, the emerald exhibits

Category

2010s Colombian Loose Gemstones

Materials

Emerald

Art Deco Colombian Cabochon Emerald and Diamond Cluster Ring
Art Deco Colombian Cabochon Emerald and Diamond Cluster Ring

Art Deco Colombian Cabochon Emerald and Diamond Cluster Ring

Located in London, GB

weigh 4,0 carats, accompanied by The Gem & Pearl Lab. Report stating that is of Colombian origin, set to

Category

Vintage 1920s British Art Deco Engagement Rings

Materials

Diamond, Emerald

Sapphire and Diamond Cluster Ring
Sapphire and Diamond Cluster Ring

Sapphire and Diamond Cluster Ring

Located in London, GB

Gem and Pearl Lab Cert stating that the sapphire is from Madagascar with no signs of heating, four

Category

2010s British Modern Cluster Rings

Materials

Diamond, Sapphire, Platinum

Recent Sales

Rose Gold, Platinum Diamond Ring, 1.68 Carat Ruby
Rose Gold, Platinum Diamond Ring, 1.68 Carat Ruby

Rose Gold, Platinum Diamond Ring, 1.68 Carat Ruby

Located in Paris, IDF

carat non heated Burmese ruby, surrounded with 8/8 cut diamonds.  Size : 6 3/4 US  (53.5) Carat Gem Lab

Category

Vintage 1950s Unknown Post-War Cocktail Rings

Materials

Diamond, Ruby, Rose Gold, Platinum

Certified 1 Carat Diamonds Sapphires 18 Carat White Gold Art Deco Style Ring
Certified 1 Carat Diamonds Sapphires 18 Carat White Gold Art Deco Style Ring

Certified 1 Carat Diamonds Sapphires 18 Carat White Gold Art Deco Style Ring

Located in Paris, FR

with diamonds. Central diamond weight: 0.94 carats With a Carat Gem Lab certificate specifying color

Category

2010s French Art Deco Engagement Rings

Materials

Diamond, Sapphire, 18k Gold, White Gold

A 19th Century English Topaz Diamond Ring

A 19th Century English Topaz Diamond Ring

Located in New York, NY

, circa 1890. Accompanied by a Carat Gem Lab Certificate Report #CGL09249, dated June 2015.

Category

Antique 19th Century English More Rings

Materials

Diamond, Topaz, Gold

Certified 40 carats Santa Maria Aquamarine 18-carat White Gold Ring
Certified 40 carats Santa Maria Aquamarine 18-carat White Gold Ring

Certified 40 carats Santa Maria Aquamarine 18-carat White Gold Ring

Located in Paris, FR

. Aquamarine weight: 39.24 carats With Carat Gem Lab certificate, specifying Natural Aquamarine, Santa-Maria

Category

Late 20th Century French Modern Cocktail Rings

Materials

Aquamarine, 18k Gold, White Gold

Emeralds and Diamonds Dome Ring
Emeralds and Diamonds Dome Ring

Emeralds and Diamonds Dome Ring

Located in Paris, IDF

emerald shouldered on each side by 3 baguette-cut emeralds. Carat Gem Lab certificate stating : Colombian

Category

21st Century and Contemporary French Contemporary Cocktail Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Certified 4.22 Carats Paraïba Tourmaline 1.60 Carats Diamonds 18K White Gold Rin
Certified 4.22 Carats Paraïba Tourmaline 1.60 Carats Diamonds 18K White Gold Rin

Certified 4.22 Carats Paraïba Tourmaline 1.60 Carats Diamonds 18K White Gold Rin

Located in Paris, FR

surrounded by brilliant-cut diamonds. Tourmaline certified by the Carat Gem Lab. Ring dimensions: 16.59 x

Category

2010s French Contemporary Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, White Gold, 18k Gold

2.02 Carat Unheated Intense Red Cushion Natural Ruby 'Mozambique' Ring Certified
2.02 Carat Unheated Intense Red Cushion Natural Ruby 'Mozambique' Ring Certified

2.02 Carat Unheated Intense Red Cushion Natural Ruby 'Mozambique' Ring Certified

Located in Hong Kong, Hong Kong

gold, ring size 6½ Accompanied from the Carat Gem Lab report stating that the 2.02 carat sapphire is

Category

2010s Hong Kong Art Deco Cluster Rings

Materials

Diamond, Ruby, 18k Gold

Certified 2 Carats Diamond 18 Carats White Gold Solitaire Ring
Certified 2 Carats Diamond 18 Carats White Gold Solitaire Ring

Certified 2 Carats Diamond 18 Carats White Gold Solitaire Ring

Located in Paris, FR

Carat Gem Lab certificate, specifying H color, SI1 clarity, no fluorescence. Total estimated weight of

Category

Early 2000s French Modern Solitaire Rings

Materials

Diamond, White Gold

French Art Deco Certified 1, 30 Carat Emerald Ring on White Gold with Diamonds
French Art Deco Certified 1, 30 Carat Emerald Ring on White Gold with Diamonds

French Art Deco Certified 1, 30 Carat Emerald Ring on White Gold with Diamonds

Located in PARIS, FR

emeralds, which total weight is apx 0.15Ct. Emerald certified as natural and Brazilian (Carat Gem Lab

Category

Vintage 1930s French Art Deco Cluster Rings

Materials

Diamond, Emerald, White Gold

Certified 4.21 Carats Brazilian Emerald Diamonds 18 Carats White Gold Pompadour
Certified 4.21 Carats Brazilian Emerald Diamonds 18 Carats White Gold Pompadour

Certified 4.21 Carats Brazilian Emerald Diamonds 18 Carats White Gold Pompadour

Located in Paris, FR

brilliant diamonds. Weight of the emerald : 4.21 carats With Carat Gem Lab certificate, specifying natural

Category

Vintage 1970s French Modern Engagement Rings

Materials

Diamond, Emerald, White Gold

Certified Unheated 3.63 Carats Burma Cabochon Ruby Diamonds Platinum Yellow Gold
Certified Unheated 3.63 Carats Burma Cabochon Ruby Diamonds Platinum Yellow Gold

Certified Unheated 3.63 Carats Burma Cabochon Ruby Diamonds Platinum Yellow Gold

Located in Paris, FR

. Estimated ruby weight: 3.63 carats With Carat Gem Lab certificate, specifying natural ruby, intense red

Category

Early 20th Century French Modern Engagement Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold, Platinum

Certified Unheated Burma Cabochon Spinel Diamond 18k White Gold Ring
Certified Unheated Burma Cabochon Spinel Diamond 18k White Gold Ring

Certified Unheated Burma Cabochon Spinel Diamond 18k White Gold Ring

By Les Pierres de Julie

Located in Paris, FR

diamonds. One of a kind. Weight of the spinel : 4.01 carats With Carat Gem Lab certificate, specifying

Category

2010s French Modern Engagement Rings

Materials

Diamond, Spinel, White Gold

Certified Retro Ruby Diamonds 18 Carats White Gold Ring
Certified Retro Ruby Diamonds 18 Carats White Gold Ring

Certified Retro Ruby Diamonds 18 Carats White Gold Ring

Located in Paris, FR

weight of the ruby : 1.75 carats With Carat Gem Lab certificate, specifying natural ruby, intense red

Category

Vintage 1970s French Modern Fashion Rings

Materials

Diamond, Ruby, White Gold

Engagement Emerald & Diamonds Cluster Ring on White Gold
Engagement Emerald & Diamonds Cluster Ring on White Gold

Engagement Emerald & Diamonds Cluster Ring on White Gold

Located in PARIS, FR

estimated G/H, clarity VS). Hallmark : owl Emerald certified as natural and Brazilian (Carat Gem Lab Paris

Category

Vintage 1960s Engagement Rings

Materials

Diamond, Emerald, White Gold

Edwardian Cluster Ring, Unheated Burmese Ruby 1.60 Cts, Diamond Surround
Edwardian Cluster Ring, Unheated Burmese Ruby 1.60 Cts, Diamond Surround

Edwardian Cluster Ring, Unheated Burmese Ruby 1.60 Cts, Diamond Surround

Located in PARIS, FR

accompanied by a Carat Gem Lab certificate, specifying natural Burmese ruby without thermal modifications

Category

Early 20th Century European Edwardian Cluster Rings

Materials

Diamond, Ruby

GIA CDC Certified 16.10 Carat Emerald Diamond 18 Karat Yellow Gold Pendant
GIA CDC Certified 16.10 Carat Emerald Diamond 18 Karat Yellow Gold Pendant

GIA CDC Certified 16.10 Carat Emerald Diamond 18 Karat Yellow Gold Pendant

By Andreoli

Located in New York, NY

Color SI2 Clarity eye clean 0.74 carat diamond. CDC Gem Swiss Lab Certified vivid green 16.10 carat

Category

2010s American Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Emerald, Gold, 18k Gold, Yellow Gold

CGL Certified 7.04 Carat Thai Ruby and Diamond 18 Karat Gold Earring
CGL Certified 7.04 Carat Thai Ruby and Diamond 18 Karat Gold Earring

CGL Certified 7.04 Carat Thai Ruby and Diamond 18 Karat Gold Earring

By Rewa Jewellery

Located in Bangkok, TH

certified by Carat Gem Lab (CGL) surrounded by 2.61 Carat diamonds. The earring is made in 18k white gold

Category

2010s Stud Earrings

Materials

Diamond, Ruby, 18k Gold, White Gold, Gold

7.72 Carat No Heat Thai Ruby, Emerald and Diamond Earring 18k Gold
7.72 Carat No Heat Thai Ruby, Emerald and Diamond Earring 18k Gold

7.72 Carat No Heat Thai Ruby, Emerald and Diamond Earring 18k Gold

Located in Bangkok, TH

weighs 3.51 carat is certified by Carat Gem Lab (CGL) as natural, 'No heat' and 'Intense Red'. The total

Category

2010s Dangle Earrings

Materials

Diamond, Emerald, Ruby, 18k Gold, White Gold

Vintage French Cluster Ring in 18k Gold Platinum with Emerald & Old Cut Diamonds
Vintage French Cluster Ring in 18k Gold Platinum with Emerald & Old Cut Diamonds

Vintage French Cluster Ring in 18k Gold Platinum with Emerald & Old Cut Diamonds

Located in MONTMORENCY, FR

yellow gold and platinum. At its heart lies a vivid Colombian emerald, certified by Carat Gem Lab

Category

Early 20th Century French Edwardian Cluster Rings

Materials

Diamond, Emerald, 18k Gold, Platinum

Natural Imperial Topaz Ring Gem 7.75 Carat Loose Gemstone Brazil
Natural Imperial Topaz Ring Gem 7.75 Carat Loose Gemstone Brazil

Natural Imperial Topaz Ring Gem 7.75 Carat Loose Gemstone Brazil

By Merkaba

Located in Beverly Hills, CA

Superb natural Brazilian Imperial Topaz oval gem, weighing a total of 7.75 carats. The CDC gem lab

Category

21st Century and Contemporary Brazilian Contemporary Loose Gemstones

Materials

Topaz, Imperial Topaz

GRS Certified 3.8 carat Exceptional Pink Sapphire & Diamond Halo Platinum Ring
GRS Certified 3.8 carat Exceptional Pink Sapphire & Diamond Halo Platinum Ring

GRS Certified 3.8 carat Exceptional Pink Sapphire & Diamond Halo Platinum Ring

Located in London, GB

carat vivid pink sapphire—certified by the esteemed Gem Research Lab Switzerland for its exceptional

Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Diamond, Pink Sapphire, Platinum

AGL Cert 16.22 Carat NO HEAT Natural Star Sapphire and Diamond Necklace Plat
AGL Cert 16.22 Carat NO HEAT Natural Star Sapphire and Diamond Necklace Plat

AGL Cert 16.22 Carat NO HEAT Natural Star Sapphire and Diamond Necklace Plat

By Kiersten Elizabeth

Located in Southport, CT

Carats All Set in Platinum 950 Total Gem Weight 17.87 Carats Lab Certification Detail Larger Star

Category

21st Century and Contemporary American Modern Pendant Necklaces

Materials

Diamond, Star Sapphire, Platinum

Bracelet 18 kt gold diamonds + sapphire cabouchon earrings
Bracelet 18 kt gold diamonds + sapphire cabouchon earrings

Bracelet 18 kt gold diamonds + sapphire cabouchon earrings

Located in Antwerp, BE

20 mm x 18 mm Total weight: 11.0 gram / 0.390 oz / 7.1 dwt Comes with 2 Carat Gem Lab Certificates

Category

21st Century and Contemporary Belgian Artisan Modern Bracelets

Materials

Diamond, Sapphire, Gold

Designer Cartier Emerald and Diamond Platinum Ring
Designer Cartier Emerald and Diamond Platinum Ring

Designer Cartier Emerald and Diamond Platinum Ring

By Cartier

Located in Scottsdale, AZ

(1) Emerald and includes a Cartier Carat Gem Lab Gemological Laboratory Report. Reference #4278952

Category

21st Century and Contemporary French Fashion Rings

Materials

Emerald, Platinum

French Art Nouveau Pearl and Diamond Ring
French Art Nouveau Pearl and Diamond Ring

French Art Nouveau Pearl and Diamond Ring

Located in London, GB

Gem & Pearl Lab report, stating to be natural of saltwater origin, set between two old brilliant-cut

Category

Antique 1890s French Art Nouveau Three-Stone Rings

Materials

Diamond, Pearl, Natural Pearl, Yellow Gold, Silver

Victorian Sapphire and Diamond Bee Brooch
Victorian Sapphire and Diamond Bee Brooch

Victorian Sapphire and Diamond Bee Brooch

Located in London, GB

accompanied by Gem & Pearl Lab Report 17165 stating to be natural with no indication of heating, the wings

Category

Antique 1880s British Late Victorian Brooches

Materials

Diamond, Ruby, Sapphire, Yellow Gold, Silver

Intense Blue Ceylon Sapphire Ring 7.62 Carat No Heated Carat Gem Lab Certified
Intense Blue Ceylon Sapphire Ring 7.62 Carat No Heated Carat Gem Lab Certified

Intense Blue Ceylon Sapphire Ring 7.62 Carat No Heated Carat Gem Lab Certified

By Héritage Jewelry

Located in Istanbul, TR

A Intense Blue Sapphire Ring weighing 7.62 carats. The stone’s shape is oval, with a striking

Category

21st Century and Contemporary Sri Lankan Three-Stone Rings

Materials

Diamond, Sapphire, Blue Sapphire, 18k Gold

Sapphire Navette and Brilliant Cut Diamond Gold Ring Set
Sapphire Navette and Brilliant Cut Diamond Gold Ring Set

Sapphire Navette and Brilliant Cut Diamond Gold Ring Set

Located in Paris, IDF

. Gem Lab Certificate : Ceylonese sapphire with no modifications of heating.

Category

1990s French Contemporary Engagement Rings

Materials

Blue Sapphire, White Diamond, 18k Gold

Certified 0.60 carats Diamonds 18-carat white gold Daisy Ring
Certified 0.60 carats Diamonds 18-carat white gold Daisy Ring

Certified 0.60 carats Diamonds 18-carat white gold Daisy Ring

Located in Paris, FR

. One-of-a-kind piece. Ideal engagement ring! Weight of central diamond: 0.60 carats With a Carat Gem

Category

2010s French Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Certified 4.21 Carat Unheated Tanzanian Ruby Diamond 18 Karat White Gold Ring
Certified 4.21 Carat Unheated Tanzanian Ruby Diamond 18 Karat White Gold Ring

Certified 4.21 Carat Unheated Tanzanian Ruby Diamond 18 Karat White Gold Ring

By Les Pierres de Julie

Located in Paris, FR

Stunnig ring set with a 4.21 carat unheated Tanzanian cushion cut ruby ​​(Carat Gem Lab Certificate

Category

2010s French Contemporary Engagement Rings

Materials

Diamond, Ruby, 18k Gold, White Gold

Certified 2.60 Carats Diamond 18 Carats White Gold Solitaire Ring
Certified 2.60 Carats Diamond 18 Carats White Gold Solitaire Ring

Certified 2.60 Carats Diamond 18 Carats White Gold Solitaire Ring

Located in Paris, FR

: 8) 18 carat white gold, 750/1000th (eagle head hallmark) Carat Gem Lab certificate specifying G/H

Category

Vintage 1920s French Art Nouveau Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Certified Retro Ruby Diamonds 18 Carats White Gold Ring
Certified Retro Ruby Diamonds 18 Carats White Gold Ring

Certified Retro Ruby Diamonds 18 Carats White Gold Ring

Located in Paris, FR

weight of the ruby : 1.75 carats With Carat Gem Lab certificate, specifying natural ruby, intense red

Category

Early 2000s French Modern Fashion Rings

Materials

Diamond, Ruby, White Gold

Gübelin Certified No Heat 8.05 carat Purple Sapphire Earrings
Gübelin Certified No Heat 8.05 carat Purple Sapphire Earrings

Gübelin Certified No Heat 8.05 carat Purple Sapphire Earrings

Located in New York, NY

will captivate your imagination. Each earring boasts a stunning 4.03 carat Gübelin Gem Lab certified No

Category

21st Century and Contemporary American Art Deco Dangle Earrings

Materials

Purple Sapphire, Diamond, 18k Gold, White Gold, Yellow Gold

Bayco 8.47 Total Carats Colombian Emerald Diamond Platinum Earrings
Bayco 8.47 Total Carats Colombian Emerald Diamond Platinum Earrings

Bayco 8.47 Total Carats Colombian Emerald Diamond Platinum Earrings

By Bayco

Located in New York, NY

total, certified by Gubelin Gem Lab and C.Dunaigre Consulting, alternating with 6 white diamonds

Category

21st Century and Contemporary American Modern Dangle Earrings

Materials

Diamond, White Diamond, Emerald, Platinum

Fine Floral Ruby and Diamond Ring, 7.52 Carat in Rubies
Fine Floral Ruby and Diamond Ring, 7.52 Carat in Rubies

Fine Floral Ruby and Diamond Ring, 7.52 Carat in Rubies

By Pampillonia

Located in Dallas, TX

a total of 7.52 carats with Stone Lab Group gem report for all. These are older Thai rubies, heated

Category

2010s American Cluster Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

8.46 Carat Unheated Sapphire Diamond Platinum Three Stone Ring
8.46 Carat Unheated Sapphire Diamond Platinum Three Stone Ring

8.46 Carat Unheated Sapphire Diamond Platinum Three Stone Ring

By Shreve, Crump & Low

Located in Chestnut Hill, MA

with Tokyo gem lab certificate #24070332 stating No Heat, the center stone is flanked by 2 brilliant

Category

21st Century and Contemporary Unknown Contemporary Three-Stone Rings

Materials

Blue Sapphire, Diamond, Sapphire, White Diamond, Platinum

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Antique Ring 25ct natural Blue Sapphire solid 18K Gold Ø 4.75 US /9.6gr

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Located in SE

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Category

Antique Early 19th Century European Baroque Revival Solitaire Rings

Materials

Blue Sapphire, 18k Gold

Antique Iberian (Spain) Colombian Emerald & Diamond Earrings late 18th Century
Antique Iberian (Spain) Colombian Emerald & Diamond Earrings late 18th Century

Antique Iberian (Spain) Colombian Emerald & Diamond Earrings late 18th Century

Located in OVIEDO, AS

Dazzling pair of museum quality Herring/ Chandelier earrings (collector's item), with electric foiled Emeralds. Inlaid with rose-cut and table-cut diamonds. Superbly preserved, datin...

Category

Antique Late 18th Century Spanish Georgian Chandelier Earrings

Materials

Diamond, Emerald, 18k Gold, Silver

GIA Certified 3 Carat Old Mine Cushion Diamond Platinum Studs
GIA Certified 3 Carat Old Mine Cushion Diamond Platinum Studs

GIA Certified 3 Carat Old Mine Cushion Diamond Platinum Studs

By Antinori Fine Jewels

Located in Chicago, IL

an exquisite pair of GIA certified 3 carat old mine cut cushion diamond platinum studs full of brightness

Category

2010s Italian Modern Clip-on Earrings

Materials

Diamond, White Diamond, Platinum

Gucci 90th Anniversary Ad Runway Python Skakeskin Pump Heels Sz 36.5   $2425
Gucci 90th Anniversary Ad Runway Python Skakeskin Pump Heels Sz 36.5   $2425

Gucci 90th Anniversary Ad Runway Python Skakeskin Pump Heels Sz 36.5 $2425

By Gucci

Located in Conroe, TX

Gucci Worn One Time Minor Markings to Soles Only Gucci's 90th anniversary Fall Runway show, $2425 * Python Heels * Size: 36.5 * Purple & Orange Snakeskin Python * Adjustable A...

Category

2010s Italian Shoes

Vintage Yves Saint Laurent Rive Gauche Sz 44 Black Corset / Bustier Dress YSL
Vintage Yves Saint Laurent Rive Gauche Sz 44 Black Corset / Bustier Dress YSL

Vintage Yves Saint Laurent Rive Gauche Sz 44 Black Corset / Bustier Dress YSL

By Yves Saint Laurent

Located in San Diego, CA

Drop dead gorgeous vintage Yves Saint Laurent 'Rive Gauche' YSL black dress! Quite possibly the most flattering dress I have ever seen! This rare beauty does wonders for the body! Co...

Category

1980s French Cocktail Dresses

ALEXANDER McQUEEN 1996 "The Hunger" White Ivory Silk Crepe Asymmetric Dress
ALEXANDER McQUEEN 1996 "The Hunger" White Ivory Silk Crepe Asymmetric Dress

ALEXANDER McQUEEN 1996 "The Hunger" White Ivory Silk Crepe Asymmetric Dress

By Alexander McQueen

Located in Thiensville, WI

ALEXANDER McQUEEN 1996 "The Hunger" White Ivory Silk Crepe Asymmetric Dress Brand / Manufacturer: Alexander McQueen Collection: 1996 Designer: Alexander McQueen Style: Cocktail dr...

Category

1990s Cocktail Dresses

New TOM FORD for GUCCI S/S 2004 Black Satin Crocodile Crystal Corset Shoes 6 B
New TOM FORD for GUCCI S/S 2004 Black Satin Crocodile Crystal Corset Shoes 6 B

New TOM FORD for GUCCI S/S 2004 Black Satin Crocodile Crystal Corset Shoes 6 B

By Tom Ford for Gucci, Gucci

Located in Montgomery, TX

Highly Collectible GUCCI Pair from TOM FORD'S Era S/S 2004 Collection Designer Size - 6 B Color - Black Bamboo and Crocodile Metallic Heel - 4" Silver-Tone Crystal Details Lace-Up...

Category

Early 2000s Italian Heels

NWT Vintage Bob Mackie Size 8 Black and White Color Block Sleeveless Gown Dress
NWT Vintage Bob Mackie Size 8 Black and White Color Block Sleeveless Gown Dress

NWT Vintage Bob Mackie Size 8 Black and White Color Block Sleeveless Gown Dress

By Bob Mackie

Located in San Diego, CA

Beautiful and flattering brand new with original store tags vintage BOB MACKIE black and white color block Size 8 evening gown! Features blak crepe at bust, white crepe at waist, and...

Category

Late 20th Century American Evening Gowns

18K Gold 6.55cts Bezel Set Men's Colombian Emerald Solitaire Gypsy Signet Ring
18K Gold 6.55cts Bezel Set Men's Colombian Emerald Solitaire Gypsy Signet Ring

18K Gold 6.55cts Bezel Set Men's Colombian Emerald Solitaire Gypsy Signet Ring

Located in Jupiter, FL

Displayed is a stunning, Colombian emerald signet bezel ring in 18K yellow gold. This gorgeous statement-size solitaire ring carries a 6.55-carat ethically mined emerald in a secure ...

Category

2010s Colombian Art Deco Solitaire Rings

Materials

Emerald, 18k Gold

Oscar de la Renta Resort 2009 Runway One Shoulder Silk Toga Dress $3, 200 BNWT
Oscar de la Renta Resort 2009 Runway One Shoulder Silk Toga Dress $3, 200 BNWT

Oscar de la Renta Resort 2009 Runway One Shoulder Silk Toga Dress $3, 200 BNWT

By Oscar De La Renta

Located in San Diego, CA

Amazing brand new with tags Oscar de la Renta silk one shoulder dress! Detailed for $3,200! Featured in the Resort 2009 Oscar Runway Collection (see pictures). One shoulder can be wo...

Category

21st Century and Contemporary Italian Cocktail Dresses

1980s Louis Feraud Size 4 Lipstick Red Silk Chiffon 80s Vintage Dress + Shawl
1980s Louis Feraud Size 4 Lipstick Red Silk Chiffon 80s Vintage Dress + Shawl

1980s Louis Feraud Size 4 Lipstick Red Silk Chiffon 80s Vintage Dress + Shawl

By Louis Feraud

Located in San Diego, CA

Beautiful vintage late 1980s LOUIS FERAUD lipstick red silk chiffon sleeveless dress and large shawl! Features a flattering ruched bodice with thin spaghetti straps at each shoulder....

Category

1990s German Cocktail Dresses

BUCCELLATI Aquamarine Diamond Ruby 18k Yellow Gold Ring
BUCCELLATI Aquamarine Diamond Ruby 18k Yellow Gold Ring

BUCCELLATI Aquamarine Diamond Ruby 18k Yellow Gold Ring

By Gianmaria Buccellati

Located in New York, NY

This exquisite vintage Gianmaria Buccellati cocktail ring is crafted in 18k brushed and textured yellow gold with white gold accents. This ring is set with a faceted oval 7.0mm x 10....

Category

1990s Cocktail Rings

Materials

Aquamarine, Diamond, Ruby, Yellow Gold

Tom Ford for Gucci c. 2001 Cutout Back Embellished Brown Evening Dress Gown
Tom Ford for Gucci c. 2001 Cutout Back Embellished Brown Evening Dress Gown

Tom Ford for Gucci c. 2001 Cutout Back Embellished Brown Evening Dress Gown

By Tom Ford for Gucci

Located in Naples, FL

Tom Ford for Gucci c. 2001 Cutout Back Embellished Brown Evening Dress Gown IT 42 Gucci sequin embellished evening dress with square neckline, open back featuring concealed zip clos...

Category

Early 2000s Evening Dresses and Gowns

Roman Malakov 11.03 Carats Natural Cabochon Star Burmese Ruby Halo Cocktail Ring
Roman Malakov 11.03 Carats Natural Cabochon Star Burmese Ruby Halo Cocktail Ring

Roman Malakov 11.03 Carats Natural Cabochon Star Burmese Ruby Halo Cocktail Ring

By Roman Malakov

Located in New York, NY

An exquisite cocktail ring, featuring a very rare 11.03 carats natural cabochon star ruby certified by AGTA as having a Burmese origin with a red color and no indication of heat trea...

Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

Emilio Jewelry GIA Certified 3.00 Carat Pinkish Diamond Ring
Emilio Jewelry GIA Certified 3.00 Carat Pinkish Diamond Ring

Emilio Jewelry GIA Certified 3.00 Carat Pinkish Diamond Ring

By Emilio!

Located in New York, NY

From Emilio Jewelry, a well known and respected wholesaler/dealer located in the Iconic Gem Tower/Gia Building in New York's Diamond District. An incredible look and value please inq...

Category

21st Century and Contemporary Three-Stone Rings

Materials

Brown Diamond, Pink Diamond

Rozae Nichols Charcoal Gray Ombre Sequins A - Line Silk Trapeze Top / Blouse
Rozae Nichols Charcoal Gray Ombre Sequins A - Line Silk Trapeze Top / Blouse

Rozae Nichols Charcoal Gray Ombre Sequins A - Line Silk Trapeze Top / Blouse

By Rozae Nichols

Located in San Diego, CA

Chic Rozae Nichols charcoal gray ombre trapeze top! 100% silk, with hundreds of sequins encrusted throughout the entire blouse. Adjustable straps, so you can make shorter or longer. ...

Category

21st Century and Contemporary American Blouses and Tops

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Carat Gem Lab For Sale on 1stDibs

On 1stDibs, you can find the most appropriate carat gem lab for your needs in our varied inventory. Frequently made of Gold, 18k Gold and White Gold, this item was constructed with great care. Our collection of these items for sale includes 1 vintage editions and 11 modern creations to choose from as well. You’re likely to find the perfect carat gem lab among the distinctive items we have available, which includes versions made as long ago as the 20th Century as well as those produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but versions are of considerable interest. Finding an appealing carat gem lab — no matter the origin — is easy, but Héritage Jewelry each produced a popular version that is worth a look. A cushion cut version of this piece has appeal, but there are also emerald cut and brilliant cut versions for sale. There aren’t many items for men if you’re seeking a carat gem lab, as most of the options available are for women and unisex.

How Much is a Carat Gem Lab?

Prices for a carat gem lab can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $8,085 and can go as high as $224,767, while this accessory, on average, fetches $53,735.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.