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7.37 Carat Black Opal Garnet Sapphire White Gold Pendant Necklace
Located in Stamford, CT
Black opal and sapphire pendant necklace. Stunning rectangular blue and green black 7.37ct opal
Category

21st Century and Contemporary Pendant Necklaces

Materials

Garnet, Opal, Sapphire, Black Opal, Gold, 18k Gold, White Gold

Opal Diamond and Sapphire Pendant Necklace Estate Fine Jewelry
Located in Montreal, QC
Simply Beautiful! Elegant and finely detailed Opal, Diamond and Sapphire Pendant Necklace suspended
Category

Mid-20th Century Modernist Pendant Necklaces

Materials

Diamond, Opal, Sapphire, 18k Gold, Yellow Gold, Sterling Silver

Opal, Sapphire, and Spinel Pagoda Pendant
Located in Woodland Hills, CA
, 20 inch, 2mm wide, wheat chain. Oval Australian Opal - 18x10mm Pink sapphires - 3.34 ctw Silver
Category

21st Century and Contemporary American Artisan Pendant Necklaces

Materials

14k Gold

Opal, Sapphire, and Spinel Pagoda Pendant
Opal, Sapphire, and Spinel Pagoda Pendant
W 1.38 in D 0.2 in L 1.97 in
18K Yellow Gold Pendant White Diamond Sapphires Tsavorite and Opal Fire
Located in ประเวศ, TH
, exuding timeless appeal. 18K Yellow Gold Pendant White Diamond Sapphires Tsavorite and Opal Fire White
Category

2010s Thai Pendant Necklaces

Materials

Yellow Sapphire, Tsavorite, Blue Sapphire, Sapphire, Opal, White Diamond...

Coomi 20K Antique Feline Pendant with Diamonds, Opal, Emerald, and Sapphire
By Coomi
Located in Secaucus, NJ
Hand made Coomi antique feline pendant set in 20K yellow gold with 12.45cts opal, 0.27cts pavé and
Category

Antique 15th Century and Earlier Thai Artisan Pendant Necklaces

Materials

White Diamond, Emerald, Opal, Pink Sapphire, Yellow Sapphire, Yellow Gol...

23.09ct Opal, Diamond and Sapphire set Pendant
Located in COTTESLOE, AU
Prepare to be mesmerised by this stunning pendant from bo•be jewelry. At its heart lies a
Category

21st Century and Contemporary Pendant Necklaces

Materials

18k Gold

Multi Color Sapphire, Tourmaline and Opal Inlay Vertical Pendant 18K Yellow Gold
Located in Scottsdale, AZ
sapphire gemstones, a captivating tourmaline, and encircled by a delicate inlay of blue opal, this piece
Category

21st Century and Contemporary Unknown Contemporary Pendant Necklaces

Materials

Tourmaline, Yellow Sapphire, Pink Sapphire, Blue Sapphire, Sapphire, Opa...

Sunita Nahata Opal 6.17ct. Pendant in 18KYG with Sapphire and Diamond
By Sunita Nahata
Located in Hong Kong, HK
gemstones cuts and color combinations. 6.17 Carat Opal Pendant in 18 Karat Yellow Gold with Multi Sapphire
Category

21st Century and Contemporary Thai Contemporary Pendant Necklaces

Materials

Sapphire, Opal, Diamond, Yellow Gold, 18k Gold, Gold

Sapphire Opal Mask Pendant Blue Purple Green Yellow Orange Natural Sapphires
Located in New York, NY
This is an absolutely magnificent Natural Multicolor Sapphire and Opal Mask Pendant in Silver and
Category

20th Century Unknown Contemporary Pendant Necklaces

Materials

Sapphire, Opal, Silver, Gold, 14k Gold, Yellow Gold

Vintage 18K Gold, Black Opal, Sapphire, & Diamond Carved Horse Pendant
Located in Philadelphia, PA
A fine vintage gold, opal, sapphire, and diamond pendant. In 18 karat yellow gold. With a large
Category

20th Century Unknown Retro Pendant Necklaces

Materials

Diamond, Opal, Sapphire, Black Opal, 18k Gold

Vintage pendant Necklace 14 Karat Natural Blue Sapphire and Opal Circa 1940's
Located in Brooklyn, NY
Vintage Gold Pendant Circa 1940 's Hand made Pendant Natural Stones 14k Yellow Gold - total with
Category

Vintage 1950s Pendant Necklaces

Materials

Opal, Blue Sapphire, 14k Gold

Peter Suchy 1.83 Carat Opal Sapphire Rose Gold Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Discover the enchanting allure of the Peter Suchy 1.83ct Opal and sapphire Sapphire rose gold
Category

21st Century and Contemporary Pendant Necklaces

Materials

Opal, Sapphire, Pink Sapphire, Gold, 18k Gold, Rose Gold

Baby Phoenix - Black Opal, Diamond, Sapphire Pendant Brooch 18K Gold
Located in Suwanee, GA
Baby Phoenix - Australian Semi Black Opal, Diamond, Sapphire Pendant Brooch 18K Gold. Design
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Diamond, Opal, Sapphire, Black Opal, 18k Gold

Sunita Nahata Opal and Blue Sapphire 2.48ct. Pendant in 18KYG with Diamond.
By Sunita Nahata
Located in Hong Kong, HK
Sunita Nahata presents a stunning Ethiopian opal cabochon pendant, adorned with blue sapphire and
Category

21st Century and Contemporary Thai Contemporary Pendant Necklaces

Materials

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

Opal Sapphire and Diamond Art Deco Style Target Pendant in 14K White Gold
Located in Bangkok, TH
captivating opal at the center, surrounded by vibrant sapphires and sparkling diamonds. The opal's mesmerizing
Category

21st Century and Contemporary Unknown Art Deco Pendant Necklaces

Materials

Diamond, Opal, Sapphire, 14k Gold, White Gold

Opal and Diamond Pendant with Sapphire and Diamond Halos Set in 18 Karat Gold
Located in Addison, TX
This piece is a genuine 18K Diamond and Sapphire custom design! This beautiful decorative pendant
Category

20th Century American Art Deco Pendant Necklaces

Materials

Diamond, Opal, Sapphire, Gold, 18k Gold, White Gold

Vintage Opal Sapphire Sterling Silver Gold Pendant Necklace Estate Fine Jewelry
Located in Montreal, QC
Stylish and finely detailed Ethiopian Opal and Gemstone Sapphire Pendant Necklace in flattering
Category

Vintage 1980s Contemporary Pendant Necklaces

Materials

Opal, Sapphire, Gold, Sterling Silver

The Egret - Boulder Opal Diamond Sapphire Pendant & Brooch 18k Gold
Located in Suwanee, GA
The Egret - Australian Boulder Opal Diamond Sapphire Pendant & Brooch 18k White & Yellow Gold
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

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

14K Yellow Gold 30.59ct Jelly Opal, Sapphire & 1.07ctw Diamond Pendant Necklace
Located in Holtsville, NY
fusion of opal, sapphire, and diamonds, this pendant necklace is a timeless and luxurious addition to any
Category

2010s American Artist Pendant Necklaces

Materials

Diamond, Opal, Sapphire, 14k Gold, Yellow Gold

31.84 Carat Opal Chameleon Pendant with Diamond, Sapphires and Tsavorites
Located in COTTESLOE, AU
This captivating pendant is a true statement piece. The Natural 31.84 Carat Opal, shimmering with
Category

21st Century and Contemporary Pendant Necklaces

Peter Suchy 4.90 Carat Boulder Opal Garnet Sapphire White Gold Pendant Necklace
By Peter Suchy
Located in Stamford, CT
One of a kind boulder Opal, Sapphire and Tsavorite pendant necklace. Two natural boulder opals one
Category

21st Century and Contemporary Pendant Necklaces

Materials

Garnet, Opal, Sapphire, Gold, 18k Gold, White Gold

Antique Circa 1900s 18k Gold Natural Diamond And Opal And Sapphire Necklace
Located in Fatih/İstanbul, 34
In very good condition. Total weight is 11 grams. Totally is diamond 0.35 ct. The diamond is has Light Brown and s2-s3-Pique 1 clarity. Total lenght is chain 42 cm. Please contact fo...
Category

Antique Early 1900s European Victorian Pendant Necklaces

Materials

Diamond, Opal, Sapphire, 18k Gold

You Are in My Heart - Australian Doublet Opal Pink Sapphire Pendant 18K Rose Gol
Located in Suwanee, GA
Australian Doublet Opal Pink Sapphire Pendant Necklace 18K Rose Gold.  Design name: You Are in My
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Opal, Pink Sapphire, 18k Gold, Rose Gold

Wendy Brandes 18K Yellow Gold Cat Lariat Necklace With Orange Sapphires and Opal
By Wendy Brandes
Located in New York, NY
in one of his frequent "bowl poses" while playing with an Australian opal. 328 orange sapphires
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, Sapphire, 18k Gold, Yellow Gold

Fairy Whisper - Fire Opal Necklace in 18K White Gold with Diamonds, Sapphires
Located in Suwanee, GA
Fairy Whisper - Fire Opal Necklace in 18K White Gold with Diamonds, Sapphires & Turquoise
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Opal, Fire Opal, Sapphire, Diamond, White Gold, 18k Gold

Opal and Diamond Halo Art Deco Style Necklace in 14K White Gold
Located in Bangkok, TH
This enchanting Art Deco-style necklace features a stunning opal at its center, evoking the
Category

21st Century and Contemporary Unknown Art Deco Pendant Necklaces

Materials

Sapphire, Opal, Diamond, White Gold, 14k Gold

Lotus Water Lily Design Pink Sapphire Diamond Pendant Necklace 18K Rose Gold
Located in Suwanee, GA
Lotus Water Lily Design Pink Sapphire Diamond Pendant Necklace 18K Rose Gold. Free Domestic USPS
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Diamond, Pink Sapphire, 18k Gold, Rose Gold

Vintage 14kt Gold and Silver Bee Brooch Pendant Diamonds, Opals and Sapphires
Located in Aventura, FL
: 1990´s Style:  Vintage Metal: 14Kt Yellow Gold & Silver Stone: Natural Diamonds, Sapphires & Opal
Category

1990s Brooches

Materials

Opal, Sapphire, Gold, Yellow Gold, Silver

1970s Cabochon Cut Boulder Opal 1.52ct Sapphire and 1.28ct Diamond Pendant
Located in Jesmond, Newcastle Upon Tyne
boulder opal cabochon, a purple sapphire and diamonds. The pendant is an exceptional gauge of gold and is
Category

Vintage 1970s German Drop Necklaces

Materials

Diamond, Opal, Sapphire, 18k Gold, Yellow Gold, 14k Gold

Opal Sapphire Diamond Pendant and Stud Earrings Jewelry Set in 14K White Gold
Located in Bangkok, TH
luxurious 14K white gold. At the center of the pendant and earrings, vibrant opals are surrounded by French
Category

21st Century and Contemporary Thai Art Deco Stud Earrings

Materials

Diamond, Opal, Sapphire, 14k Gold, White Gold

Genuine Sleeping Beauty Turquoise and Sapphire Diamond Pendant Necklace
Located in GOES, NL
Adorn yourself with this unique pink opal charm necklace. A sparkling pink Peruvian opal necklace
Category

2010s Peruvian Modern Beaded Necklaces

Materials

Diamond, Opal, Turquoise, Sapphire, 14k Gold

18k White Gold Pink Flamingo with Opal and Diamonds Brooch or Pendant
By Avanti
Located in Carrollton, TX
and pendant boasts a stunning Ethiopian Opal surrounded by pink sapphires and diamonds. This
Category

2010s American Contemporary Brooches

Materials

Diamond, Opal, Pink Sapphire, 18k Gold, White Gold

Boulder Opal, Sapphire and Diamond Flower Pendant
By Nancy Phillips
Located in Eugene, OR
unique, one of a kind nature of opals. A cabachon blue sapphire resides in the middle of the pendant.
Category

2010s Thai Artisan Pendant Necklaces

Materials

Diamond, Opal, Sapphire, 18k Gold

Blackened Silver Pendant with Boulder Opal, Garnet and Sapphire
By Kary Adam
Located in Seattle, WA
A Blackened Silver Pendant with Boulder Opal, Tsavorite Garnet, Sapphire & Rhodolite Garnet on a
Category

2010s Thai Contemporary Pendant Necklaces

Materials

Garnet, Opal, Sapphire, Silver

Pink Opal and Pink Sapphire Dramatic Pendant by Zoltan David
By Zoltan David
Located in Austin, TX
are set into the Pink Opal. The pendant is 27 mm wide, 58 mm long and 13 mm deep. The chain is an 18
Category

2010s American Art Nouveau Pendant Necklaces

Materials

Diamond, Opal, Pink Sapphire, Palladium, Platinum

Sim and Roz 14K Gold Pendant Necklace with Opal, Sapphires and Diamonds
Located in Istanbul, 34
to your style. 14K Gold 0.35 CARATS DIAMONDS 0.64 CARATS SAPPHIRES 0.52 CARATS OPALS 0.12 CARATS
Category

2010s Turkish Modern Pendant Necklaces

Materials

Diamond, Opal, Sapphire, 14k Gold, Rose Gold, Yellow Gold

Opal Snake Pendant Set with Coniac Diamonds and Red Sapphires
By Kary Adam
Located in Seattle, WA
Kary Adam Designed, 14kt Blackened Gold Opal Pendant with Coniac Diamonds, Red Sapphire Eyes in and
Category

2010s Thai Contemporary Pendant Necklaces

Materials

Opal, 14k Gold

Amy Y Opal, Diamond and Sapphire Contemporany Gecko Pendant Necklace 'Rex'
By Amy Y
Located in Santa Monica, CA
Amy Y’s 18K gold, opal, diamond and sapphire pendant necklace embraces the earth’s desert friends
Category

2010s American Contemporary Pendant Necklaces

Materials

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

Nevada Wood Opal Pendant with Garnet and Sapphire Briolettes in 22k and 18k Gold
By The Golden Eye
Located in Santa Fe, NM
A lozenge pendant of Nevada Wood Opal gleams with green, orange, red and milky gold lights from the
Category

2010s American Contemporary Pendant Necklaces

Materials

Garnet, Opal, Sapphire, 18k Gold, 22k Gold

Oval Opal, Green, Pink and Orange Sapphire, Diamond Pendant Halo 14 Karat Gold
By Alberto
Located in GREAT NECK, NY
14K Yellow Gold 1 Oval Opal at 2.76 Carats- Measuring 11 x 9 mm 48 Round Green, Pink & Orange
Category

2010s American Contemporary Pendant Necklaces

Materials

Green Sapphire, Pink Sapphire, Sapphire, Opal, White Diamond, Diamond, G...

NIXIN Jewelry Rainbow in Wait Australian Opal Necklace with Sapphires and Gold
Located in Los Angeles, CA
carat Pipe Opal and row of ombré sapphires coalesce in a rainbow palette, poised to reveal their
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, Sapphire, Gold, 14k Gold, Yellow Gold

14K Yellow Gold Small Opal, Emerald and Diamond Horseshoe Necklace
Located in Manhattan Beach, CA
The Opal and Pink Opal Inlay Manifest necklace imbues love and hope. Opal inlay represents hope
Category

2010s American Art Deco Pendant Necklaces

Materials

Diamond, Emerald, Opal, Pink Sapphire, 14k Gold

NIXIN Jewelry Eucalyptus Melody Australian Opal Necklace with Emerald and Gold
Located in Los Angeles, CA
. Fashioned in 14k yellow gold, this opal pendant necklace has prong setting on the faceted stones and a bezel
Category

2010s American Contemporary Pendant Necklaces

Materials

Opal, Sapphire, Aquamarine, Emerald, Gold, 14k Gold, Yellow Gold

Kian Design Opal and Diamond Necklace In 18 Carat Two-Tone Gold
By Kian Design
Located in South Perth, AU
Opale & Diamante Necklace This stunning opal doublet is encased within a lovely 18ct yellow gold
Category

2010s Australian Art Deco Pendant Necklaces

Materials

Opal, Diamond, Blue Sapphire, White Diamond, Gold, 18k Gold, Yellow Gold...

14K Yellow Gold Turquoise, Sapphire and Diamond Horseshoe Necklace
Located in Manhattan Beach, CA
The Turquoise and Pink Opal inlay Manifest necklace is a beacon for creativity, protection and
Category

2010s American Retro Pendant Necklaces

Materials

Aquamarine, Opal, Turquoise, 14k Gold

Boulder Opal, Sapphire and Tsavorite Pendant on a Beaded Boulder Opal Necklace.
By Kary Adam
Located in Seattle, WA
Kary Adam Designed, Opal, Sapphire and Tsavorite Pendant set in Blackened Silver. A Cabochon
Category

2010s American Contemporary Beaded Necklaces

Materials

Opal, Sapphire, Tsavorite, Silver

White Gold, Oval Yellow Opal Yellow Sapphire and Diamond Ear Pendant Earrings
Located in New York, NY
Gently articulating 18K white gold chandelier earrings faceted oval yellow opals: 17.42 carats
Category

2010s Unknown Contemporary Chandelier Earrings

Materials

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

Pendant / Brooch Pin of Gold, Opal, Sapphires and Diamonds
By Julinda Chia Morgan
Located in Singapore, SG
An 18K gold pendant set with a 24.91ct Brazilian fire opal and featuring an Asian cloud motif
Category

Singaporean Chain Necklaces

22K Yellow Gold Multi-Gem Pendant
Located in New York, NY
22K yellow gold pendant containing round emeralds, opals, rubies, blue and white sapphires, and
Category

Early 20th Century More Jewelry

Materials

Emerald, Opal, Ruby, Blue Sapphire, Turquoise, Yellow Gold

Boulder Opal Pendant with Tsavorite and Sapphires
By Charles Skibell
Located in Dallas, TX
Charles Skibell Custom designed 62.5ct Boulder Opal in 18ct yellow gold with Tsavorites and Blue
Category

2010s American Modern Pendant Necklaces

Materials

Opal, Blue Sapphire, Tsavorite, 18k Gold, Yellow Gold

Two-Tone Gold Opal, Pink Sapphire and Diamond Pendant
Located in Palm Beach, FL
Two-tone Gold Opal, Pink Sapphire and Diamond Pendant Featuring a 7.33 carat oval Opal of white
Category

20th Century Pendant Necklaces

Materials

Diamond, Ruby, Opal, Pink Sapphire, Gold, Platinum

Tiffany & Co. Louis Comfort Opal Demantoid Garnet and Sapphire Pendant Necklace
By Louis Comfort Tiffany
Located in New York, NY
A black opal demantoid garnet and sapphire pendant brooch set with rectangular cushion-cut black
Category

Antique Early 1900s American Pendant Necklaces

Materials

Sapphire, Garnet, Opal

Natural Opal Carving Pendant Necklace in 18 Karat Gold with Sapphire and Ruby
Located in Hong Kong, HK
A beautiful and Chic Opal carving necklace/pendant set in 18k gold with sapphires, ruby and
Category

1990s Indian Artisan Pendant Necklaces

Materials

Opal, Ruby, Sapphire, Gold

Australian 27.99ct Opal and Diamond Pendant in 18K White Gold with Sapphires
By Renata Bernard
Located in Sydney, AU
“Reef Cocoon” opal pendant celebrates the beauty of Australia’s Great Barrier Reef. The eye
Category

2010s Australian Contemporary Pendant Necklaces

Materials

Diamond, Opal, Sapphire, Tsavorite, 18k Gold, White Gold

Syna Yellow Gold Opal Flower Pendant with Diamonds, Pink Sapphires and Tsavorite
By Syna Jewels
Located in Fort Lee, NJ
Created in 18 karat yellow gold Hand carved Australian Opal Flower 29 carats approx. Champagne
Category

2010s Unknown Contemporary Pendant Necklaces

Materials

Diamond, Brown Diamond, Opal, Pink Sapphire, Tsavorite, 18k Gold, Yellow...

The Moon - Blue Sapphire & Australian Solid Opal Pendant Necklace 18k Yellow Gol
Located in Suwanee, GA
The Moon - Blue Sapphire & Australian Opal Pendant Necklace 18k Yellow Gold. Free Domestic USPS
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Opal, Blue Sapphire, 18k Gold, Yellow Gold

You Are in My Heart - Australian Doublet Opal Pink Sapphire Pendant 18K Rose Gol
Located in Suwanee, GA
Australian Doublet Opal Pink Sapphire Pendant Necklace 18K Rose Gold.  Design name: You Are in My
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Opal, Pink Sapphire, 18k Gold, Rose Gold

Syna Yellow Gold Opal Owl Pendant with Diamonds and Tsavorite
By Syna Jewels
Located in Fort Lee, NJ
Created in 18 karat yellow gold Hand carved Australian Opal Owl 143 carats approx. Champagne
Category

2010s Unknown Contemporary Pendant Necklaces

Materials

Diamond, Brown Diamond, Opal, Pink Sapphire, Tsavorite, 18k Gold, Yellow...

Louis Comfort Tiffany Black Opal and Enamel Necklace and Bracelet Set
By Louis Comfort Tiffany
Located in New York, NY
and bracelet set. The opals, with their painterly brushstrokes, are set among cool sapphires and fiery
Category

Vintage 1910s Art Nouveau Pendant Necklaces

Materials

Garnet, Opal, Sapphire, Black Opal, Gold, 18k Gold, Enamel

Lotus Water Lily Design Pink Sapphire Diamond Pendant Necklace 18K Rose Gold
Located in Suwanee, GA
Lotus Water Lily Design Pink Sapphire Diamond Pendant Necklace 18K Rose Gold. Free Domestic USPS
Category

2010s American Arts and Crafts Pendant Necklaces

Materials

Diamond, Pink Sapphire, 18k Gold, Rose Gold

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Opal And Sapphire Pendant For Sale on 1stDibs

Find the exact opal and sapphire pendant you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, 18k Gold and Yellow Gold, this item was constructed with great care. You can easily find a 19 antique edition and 33 modern creations to choose from as well. You’re likely to find the perfect opal and sapphire pendant among the distinctive items we have available, which includes versions made as long ago as the 18th 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 2 Carat and 2.5 Carat versions are of considerable interest. An opal and sapphire pendant from Alberto, Kary Adam and Amy Y — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for a cabochon version of this piece and are unable to find the perfect match, our selection also includes round cut and oval cut alternatives. If you’re browsing our inventory for an opal and sapphire pendant, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Opal And Sapphire Pendant?

On average, an opal and sapphire pendant at 1stDibs sells for $5,680, while they’re typically $450 on the low end and $175,000 for the highest priced versions of this item.

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.