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2.73 ct GIA Old Mine Cut Diamond Platinum Ring
Located in San Francisco, CA
Own a piece of history. This stunning diamond engagement ring features a 2.73 carat Old Mine Cut
Category

Antique 1890s Unknown Engagement Rings

Materials

Diamond, Platinum

Art Deco Style 2.90 Ct Old Mine Cut Diamond Three Stone Platinum Mount
Located in Napoli, IT
Metal: platinum, tested Hallmarks: none/worn Gems: 3 old mine cut diamonds totaling approx 2,90 Ct (1,05
Category

Mid-20th Century European Art Deco Three-Stone Rings

Materials

Diamond, Platinum

Art Deco 2.10 Ct Old Mine Diamond Seven Stone Platinum Ring
Located in Napoli, IT
Further Details Below Metal: platinum, tested Hallmarks: none/worn Gems: 1 old mine cut diamond of approx
Category

Vintage 1920s European Art Deco Engagement Rings

Materials

Diamond, Platinum

Victorian 2 ct Old Mine Cut Diamond Engagement Ring 18k Gold & Plat
Located in Joelton, TN
2.ct Old Mine Cut Victorian Diamond Engagement Ring. Clarity VS1-2, Color I-K Size 7 3/4 Circa
Category

Antique Late 19th Century English Late Victorian Engagement Rings

Materials

Diamond, Yellow Gold, 18k Gold, Platinum

Art Deco Diamond and Platinum Step Design Ring Centered by Old Mine Cut Diamonds
Located in New York, NY
An Art Deco diamond ring of stepped design centering on two old-mine cut diamonds of approximately
Category

Vintage 1920s Argentine Art Deco Cocktail Rings

Materials

Diamond, Platinum

Hancocks 4.16 Ct Cushion Padparadscha Sapphire and Old Mine Diamond 3 Stone Ring
By Hancocks
Located in London, GB
mine brilliant cut diamond with GIA certificate Setting 18ct rose gold and platinum with maker's mark
Category

2010s English Engagement Rings

Materials

White Diamond, Padparadscha Sapphire , 18k Gold, Platinum

Art Deco 1.60 Ct Sapphire 1.40 Ct Diamond Platinum ring
Located in Napoli, IT
totalling approx 1.60 Ct – 3 rectangular and 10 old mine cut diamonds totalling approx 1.40 Ct (G-VVS/SI) UK
Category

Vintage 1920s European Art Deco Band Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Platinum Pin Old Mine Diamonds 4.50 Carat
Located in MIAMI, FL
natural old mine cut diamonds. The diamonds in the design are all set in the center in a symmetrical row
Category

Early 20th Century Unknown Art Deco Brooches

Materials

Diamond, Platinum

Edwardian 1.00 Ct Diamond Platinum Panel ring
Located in Napoli, IT
hand Further Details Below Metal: platinum, tested Hallmarks: present but worn Gems: 3 old mine cut
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Diamond, Platinum

GIA Certified 3/4 Carat Asscher Cut Platinum Pendant
By Lili Jewelry
Located in New York, NY
3/4 ct Diamond set in 4 prong low basket. 18" platinum chain with a safety lock. Diamond GIA
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Edwardian .85 Ct Diamond .35 Ct Sapphire 18 KT Platinum Ring
Located in Napoli, IT
distinction and character Diamonds are old mine cut . 60 C. total with a .25 Ct the centre – G VVS/VS – high
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Platinum

Edwardian 8.50 Ct Diamond Drop Platinum Necklace
Located in Napoli, IT
throughout Further details below Metal: platinum, tested Hallmarks: none/worn Gems: 33 old European cut
Category

Antique Early 1900s European Edwardian Link Necklaces

Materials

Diamond, Platinum

Edwardian 8.50 Ct Diamond Drop Platinum Necklace
Edwardian 8.50 Ct Diamond Drop Platinum Necklace
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H 4.73 in W 1.19 in L 15.95 in
Platinum 3 Stone Emerald Cut 2.25 Carats Diamonds Ring
Located in Miami, FL
ct natural earth mined Emerald cut diamond flanked with a natural earth mined Emerald cut diamond on
Category

2010s North American Contemporary Engagement Rings

Materials

Diamond, Platinum

GIA Certified 3/4 Carat Asscher Cut Platinum Pendant
By Lili Jewelry
Located in New York, NY
3/4 ct Diamond set in 4 prong low basket. 18" platinum chain with a safety lock. Diamond GIA
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Platinum

GIA Certified 3/4 Carat Cushion Cut Platinum Pendant
By Lili Jewelry
Located in New York, NY
3/4 ct Diamond set in 4 prong low basket. 18" platinum chain with a safety lock. Diamond quality
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Antique Art Deco Platinum Old Mine Diamond Filigree Domed Ring
Located in Great Neck, NY
Metal: Platinum Weight: 4.1 Grams Size: 5 3/4 Center Diamond: Approximately .50 ct Color: L Clarity
Category

Antique Early 19th Century Unknown Art Deco Fashion Rings

Materials

Diamond, Platinum

Antique Art Deco Lambert Bros Platinum Old Mine Diamond Engagement Ring
By Lambert Brothers
Located in Great Neck, NY
engagement ring has a .65 ct old mine cut diamond in the center of a beautiful Lambert Bros art deco mounting
Category

Vintage 1940s Art Deco Engagement Rings

Materials

Diamond, Platinum

Antique Edwardian Platinum Old Mine Diamond and Emerald Engagement Ring
Located in Great Neck, NY
Beautiful Antique Edwardian Platinum Old Mine Diamond and Emerald Engagement Ring. This incredible
Category

Antique Early 1900s Edwardian Engagement Rings

Materials

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

Antique Art Deco 18K Yellow Gold Platinum Old Mine Diamond Buckle Pin
Located in Great Neck, NY
is crafted in 18K yellow gold and platinum top. It has old mine cut diamonds all over the pin and is
Category

Vintage 1910s Unknown Art Deco Brooches

Materials

Diamond, Yellow Gold, Platinum

Art Deco Diamond Platinum Bracelet Choker Necklace Stamped CT French
Located in Beverly Hills, CA
with old mine cut diamonds. The diamonds are of H-J color, VS-SI1 clarity, total weight approximately
Category

Vintage 1930s French Art Deco Choker Necklaces

Materials

Diamond, Platinum

Art Nouveau 2.65 Ct Diamond 18KT Gold Platinum Brooch Pendant
Located in Napoli, IT
old mine cut diamond of approx .60 Ct (G/VVS) – 3 old mine cut diamonds totalling approx 1.25 Ct (G/H
Category

Antique Late 19th Century European Art Nouveau Brooches

Materials

Diamond, Gold, 18k Gold, Platinum

A.G.L. Certified 9.83 Carat Pear Shaped Sapphire & 3 ct Diamond Platinum Pendant
Located in Miami, FL
-two old mine cut diamonds, weighing approximately 3.0 total carats. The piece radiates historic
Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

Antique Art Deco 14k Yellow Gold Platinum Old Mine Diamond Burma Ruby Ring
Located in Great Neck, NY
Beautiful Antique Art Deco 14K Yellow Gold Platinum Old Mine Diamond Burma Ruby Ring. This gorgeous
Category

Vintage 1920s Unknown Art Deco Cocktail Rings

Materials

Diamond, Ruby, Yellow Gold, Platinum

Antique 4.10 Ct Diamond Platinum Gold Earrings
Located in Chicago, IL
embellished with well-matched, bright white old mine cut and old European cut diamonds (E-F color, VS-SI
Category

Early 20th Century Art Deco Dangle Earrings

Materials

Diamond, Gold, Platinum

Art Deco Style 1.10 Ct Diamond Sapphire Solitaire Platinum Ring
Located in Napoli, IT
throughout Metal: platinum Hallmarks: assay Gems: cushion old mine cut diamond of approx 1.10 Ct (6,60 mm
Category

Vintage 1980s European Contemporary Solitaire Rings

Materials

Diamond, Sapphire, Platinum

Royal Blue Natural Sapphire 1.15 Ct Diamond Trilogy Platinum Ring
Located in Napoli, IT
Metal: Platinum Hallmarks: British hallmarks Gems: 1 oval faceted cut natural sapphire 3.78 Ct – 2
Category

Mid-20th Century Contemporary Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Unheated 3 Stone Sapphire Ring, 5.07 Carat Platinum 950 GIA Certified x 3
Located in Tampa, FL
New platinum 950 custom untreated sapphire ring, containing a natural mined cushion-cut blue
Category

2010s Unknown Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Platinum Deco Diamond and Blue Sapphire 3 Stone Ring
By Non Branded
Located in Lexington, KY
ring. Platinum Deco Diamond and Blue Sapphire Ring 1 = .60 ct Euro cut, VS2, I color diamond 2
Category

Vintage 1920s Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

GIA Certified 5.86 ct Platinum Sapphire Ring - Ceylon Perfect Blue Sapphire
Located in Tampa, FL
approximately 0.68 ct and 16 baguette cut diamonds weighing approximately 0.99 ct. VS-1 VS-2 clarity, F-G color
Category

2010s Sri Lankan Contemporary Engagement Rings

Materials

Blue Sapphire, Diamond, Platinum

14 Karat Gold, Platinum and Three Old-Mine Diamond Domed Flower Brooch
Located in New York, NY
14 kt., 3 old-mine cut diamonds ap. .65 ct., 20 old-mine cut diamonds ap. 1.80 cts., c. 1945, ap
Category

Vintage 1940s Brooches

Materials

Diamond, 14k Gold

3.52 Carat Antique Cushion Unheated Burma Ruby and Diamond 3-Stone Platinum Ring
Located in Boston, MA
This red cushion cut cut ruby is custom set in an antique one-of-kind diamond and platinum ring
Category

Antique Mid-19th Century Unknown Three-Stone Rings

Materials

Diamond, Ruby, Platinum

Antique Bracelet 5.5 ct Sapphire 2.3ctw Diamonds 18K Gold Platinum /17.7cm/9.4gr
Located in SE
Platinum with natural and untreated Blue Sapphire and 20 old diamond-cut Diamonds. All stones have their
Category

Vintage 1930s German Art Deco Link Bracelets

Materials

Diamond, Sapphire, 18k Gold, Platinum

Art Deco Platinum & Diamond Encrusted Pin/Fur Clips 12 CT / VS Quality Estate
Located in New York, NY
in total weight), These 2 center diamonds are old Mine Cuts and there are 4 baguettes. The back of
Category

Vintage 1960s Brooches

Materials

Diamond, Platinum

Eternity Band Ring In .950 Platinum With 1.01 Ct Of Natural Blue Sapphires
Located in Miami, FL
platinum, with high polished finish. Is mounted in a channel setting, with 30 calibrated princess cuts of
Category

Vintage 1980s American Modern Band Rings

Materials

Blue Sapphire, Platinum

Antique German Ring 0.3 ct Diamonds solid 14K Gold Platinum Ø8US/ 1.76 gr
Located in SE
Art-Deco period 3 stones German Ring featuring Diamonds and solid Platinum / or White Gold on top
Category

Vintage 1920s European Art Deco Wedding Rings

Materials

Diamond, 14k Gold, Platinum

Edwardian 6.00 Ct Harlequin Opal 1.80 Ct Diamond 18 KT Pendant
Located in Napoli, IT
exceptional sparkle 3 old European cut diamonds totalling approx 1.10 Ct (G/H-VS/SI) – 23 old mine cut
Category

Early 20th Century European Edwardian Pendant Necklaces

Materials

Diamond, Opal, 18k Gold, 9k Gold, Platinum

1930 Finish Ring 0.5ctw 3 Diamonds solid 18K Yellow Gold Platinum US7 / 1.4gr
Located in SE
Old Finish Ring with 3 old European cut Diamonds, band in solid 18K Yellow Gold with Platinum
Category

Vintage 1930s Finnish Art Deco Three-Stone Rings

Materials

Diamond, 18k Gold, Platinum

Edwardian 12 MM. Natural Split Pearl 1.60 Ct Diamond Engagement Ring
Located in Napoli, IT
with unbelievable lustre within a garland of old mine cut Diamonds – approx 1.60 Ct G/H – VVS to SI
Category

Antique Early 1900s European Edwardian Engagement Rings

Materials

Diamond, Pearl, 18k Gold, Platinum

1905 Antique Ring Ruby Diamonds solid 18K Gold Platinum ØUS 8.7.5 / 3 gr
Located in SE
A Ring with openwork crown arranged with 19 care cut Rubies and 5 natural Diamonds in Platinum
Category

Antique Early 1900s European Art Nouveau Cluster Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

1933 Wedding Ring 3 diamonds 0.6ctw solid 23K Gold Platinum Ø 5.75 US/ 4.7gr
Located in SE
diamond cut Diamond Ø 5 mm / ca. 0.56 ct. + 2 minors Ø 2 mm / 0.04 ct. each of the same cut type. Total
Category

Vintage 1930s Swedish Art Deco Engagement Rings

Materials

Diamond, Gold, 22k Gold, Platinum

1918 Antique 3 stones Ring Ruby Diamonds 18K Gold Platinum Ø US 8.75 / 3.1gr
Located in SE
Red Ruby ( lab made ) stone Ø 6.75 / ca. 1.25 and two old diamond cut diamonds in Platinum clusters
Category

Vintage 1910s Swedish Art Deco Cluster Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

Edwardian Diamond Sapphire Platinum 18 KT Gold Ring
Located in Napoli, IT
Ct old mine cut Diamonds rated as H/I – Clarity grade I – eye clean- having minus internal inclusions
Category

Antique Early 1900s European Edwardian Cluster Rings

Materials

Sapphire, Diamond, Platinum, 18k Gold, Gold

Edwardian / Art Deco Platinum and Diamond Trilogy Ring - GIA VVS2/G
Located in Hummelstown, PA
sparkling diamonds radiate from within a twinkling border of rose cut and old mine cut diamonds. Stunning
Category

Vintage 1920s Art Deco Wedding Rings

Materials

Diamond, Platinum

Ladies Antique Art Deco Platinum Filigreed Gia Diamond Cocktail Engagement Ring
Located in Houston, TX
wear. Prong Set in Platinum with: One (1) old mine cut natural diamond: Measurements: 5.41mm
Category

Vintage 1920s Unknown Art Deco Cocktail Rings

Materials

Diamond, Platinum

Diamond Platinum Pendant Necklace, circa 1970
Located in London, GB
, VVS1 – VS1. Mix of round Edwardian cut diamonds, approx 1.05 ct total, I-L, VVs1 -SI1 Total diamond
Category

Vintage 1970s British Art Deco Pendant Necklaces

Materials

Diamond, White Diamond, Brown Diamond, 18k Gold, White Gold, Platinum

Diamond Platinum Pendant Necklace, circa 1970
Diamond Platinum Pendant Necklace, circa 1970
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H 1.93 in W 0.75 in D 0.12 in
Belle Epoque Antique Diamond Platinum Necklace
Located in Chicago, IL
four chunky old mine cut diamonds: approximately 0.60 ct, 0.51 ct, 0.48 ct and 0.47 ct (H-I-J color, VS
Category

Vintage 1910s Belle Époque Pendant Necklaces

Materials

White Diamond, Enamel

1934 Ring 3 stones 0.47 ct Sapphire Diamonds solid 18K Gold Ø US 8.75 / 1.6 gr
Located in SE
Art - Deco period Three - stone Ring , band in solid 18k Yellow Gold with platinum bezels set with
Category

Vintage 1930s Swedish Art Deco Cluster Rings

Materials

Diamond, Sapphire, 18k Gold

Estate 2.10 Ct. Antique Cushion Diamond Sapphire Halo Engagement Ring
Located in Napoli, IT
Metal: platinum, tested Hallmarks: none/worn Gems: 1 old mine cushion cut diamond of approx 2.10 Ct
Category

Mid-20th Century European Contemporary Engagement Rings

Materials

Diamond, Sapphire, Platinum

Cabochon Sapphire Diamond Platinum Engagement Ring
Located in Chicago, IL
Mid century, circa 1950s A platinum cluster ring is bezel-set with a cabochon cut midnight blue
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

Art Deco Three Stone Twisted Ring 1.25 Ct Diamond
Located in Napoli, IT
Gems: 3 old European cut diamonds totalling approx .75 Ct (.20 .35 .20 G/H-VVS/VS) – 10 old mine cut
Category

Vintage 1920s European Art Deco Three-Stone Rings

Materials

Diamond, 18k Gold, Platinum

Leon Mege platinum hand-forged solitaire features a certified OMC diamond.
By Leon Mege
Located in New York, NY
upper gallery ("hidden halo," for some). 2.52 ct GVS2 old mine cut diamond; GIA #2225470728 Rolex-grade
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Platinum

Antique Rose Gold, Platinum, Sapphire and Diamond Swag Necklace
Located in New York, NY
sapphire ap. 3.75 cts., spaced by 10 old European-cut diamonds ap. .35 ct., c. 1900, ap. 6.8 dwts. Length
Category

Antique Early 1900s American Art Nouveau Pendant Necklaces

Materials

Diamond, Sapphire

Art Deco Diamond Bombe Platinum Ring, circa 1920s
Located in Beverly Hills, CA
, old European cut and old mine cut diamonds totaling 3 ct. with I-J color and VS-2 clarity. The ring
Category

20th Century Art Deco Dome Rings

Materials

Diamond, Platinum

Diamond Platinum Gold Floral Brooch Pendant
Located in Chicago, IL
with numerous bright white sparkling antique cushion cut and old mine cut diamonds. 12 cushion cut
Category

Vintage 1920s French Brooches

Materials

Diamond

1964 Nordic Ring 0.3 ct Ruby 0.22ctw Diamonds solid 18K Gold Ø 7.5 US/ 2.5gr
Located in SE
Elegant Ring in solid 18K Yellow Gold with Platinum clusters holding oval cut natural Rose Red Ruby
Category

Vintage 1960s Swedish Art Deco Three-Stone Rings

Materials

Diamond, Ruby, 18k Gold, Platinum

1935 Three 0.45ctw Diamonds Ring solid Platinum Ø 6.5US / 1.8gr
Located in SE
comfortable everyday wear. Diamonds measure Ø 3 mm x 1.7 mm deep / ca. 0.15 ct each. Total Diamond weight ca
Category

Vintage 1930s Swedish Retro Three-Stone Rings

Materials

Diamond, Sapphire, Platinum

Antique Russian Bracelet 0.5ctw Diamonds 18KGold Platinum/ 14.8cm-18 cm/10.5gr
Located in SE
. 0.08 ct, rose cuts Ø 1 mm each / ca. 0.006ct. Total weight of stones ca. 0.5 ctw, color ca. F, G /VS
Category

Antique Early 1900s European Art Nouveau Link Bracelets

Materials

Diamond, 18k Gold, Platinum

1910s Antique Brooch Pin 0.3ctw Daimond 18K Gold Platinum / 3.4 gr
Located in SE
old European cut Diamonds set in Platinum, back sides open. Largest Diamond Ø 2.5 mm / ca. 0.08ct with
Category

Vintage 1910s European Baroque Revival Brooches

Materials

Carnelian, 18k Gold, Yellow Gold, Platinum

1913 Ring 0.25ct Diamonds solid 18K Yellow Gold Platinum ØUS9.5/ 3gr
Located in SE
Diamonds. Platinum on Gold openwork crown with 3 diamond stones. Swedish hallmarks, 18k , maker is GD&Co
Category

Vintage 1910s European Art Deco Cluster Rings

Materials

Diamond, Yellow Gold, Platinum

Antique Art - Deco Ring 1.2ct Sapphire Diamonds solid Platinum ØUS 7.25 /3gr
Located in SE
made of solid Platinum. Crown measures 19 mm x 8 mm x 4 mm. Beautifully oval cut natural Blue Sapphire
Category

Vintage 1920s German Art Deco Cluster Rings

Materials

Diamond, Sapphire, Platinum

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3 Ct Platinum Mine Cut For Sale on 1stDibs

Find the exact 3 ct platinum mine cut you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from platinum, gold and 18k gold — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. Making the right choice when shopping for a 3 ct platinum mine cut may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. There have been many well-made iterations of the classic 3 ct platinum mine cut over the years, but those made by Lili Jewelry, Hancocks and Lambert Brothers are often thought to be among the most beautiful. See these pages for an old mine cut iteration of this accessory, while there are also old european cut cut and cushion cut cut versions available here, too. When shopping for a 3 ct platinum mine cut, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 3 Ct Platinum Mine Cut?

The price for a 3 ct platinum mine cut starts at $625 and tops out at $134,200 with these rings, on average, selling for $5,000.