3.50 Carat Black Opal & Diamond Halo Platinum Filigree Ring
Located in Miami, FL
Natural 3.50 Carat Australian Black Opal & Diamond Set Platinum 900 Statement Ring, Size 7.75. Details: Item Type: Statement Ring Metal: Platinum 900 Size: 7.75 (adjustable) Weight...
Diamond, Opal, Black Opal, Platinum
3.19 Carat Oval Cut Emerald Minor Oil & Diamond Cluster Platinum Vintage Ring
By Gad & Co.
Located in Miami, FL
Vintage 3.19 carat oval cut minor oil Colombian emerald and round cut diamond cluster ring in platinum 900 vintage ring setting. GRS Certified. A vintage ring setting circa late 20th...
Diamond, Emerald, Platinum
Vintage Platinum Solitaire Ring with GIA 1.60ct Round Brilliant-Cut Diamond
Located in Miami, FL
The diamond is securely set in a classic four-prong platinum 900 mount, allowing maximum light play from every angle.
Diamond, Platinum
Certified 5.11 Carat Jadeite Jade and Diamond Platinum Pendant Necklace
Located in Miami, FL
HKJ&S Certified 5.11 Carat Untreated Natural Oval Shaped Cabochon Cut Jadeite Jade Grade A (Fei Cui) and 0.90 Carat Total Round Cut Diamond Pendant Necklace in Platinum 900. Details...
Diamond, Jade, Platinum
8.5mm White Pearl and Round Diamond Bypass Platinum Ring
Located in Miami, FL
Vintage 8.5mm Cultured White Pearl and Round Diamond Bypass Platinum 900 Ring. Ring size 8.5, adjustable. Details: Item Type: Bypass Ring Metal: Platinum 900 Size: 8 1/2 (adjustable...
Diamond, Pearl, Platinum
Antique Art Deco Era Platinum 1 Carat Old European Cut Diamond Platinum Ring
Located in Miami, FL
Immerse yourself in history with this antique Art Deco diamond ring. Set in platinum 900 with a curved filigree shank. Old European cut diamond center stone with superb brilliance an...
Diamond, Platinum
Diamond Crown of Thorns Platinum Pendant Necklace
Located in Miami, FL
0.50 Carat Natural Diamond Circular Crown Of Thorns Motif Platinum 900 Pendant Necklace. Details: Item Type: Pendant Necklace Metal: Platinum 900 Pendant, Platinum 850 Chain Weight:...
Diamond, Platinum
1.00 Carat 12 Princess Cut Diamond Band Ring Platinum
Located in Honolulu, HI
Item Specifications: Metal: Platinum 900 Diamond Count: 12 princess cut Total Diamond Carat Weight: ~1.00 carats Diamond Color: G-H Diamond Clarity: VS-SI Ring Size: 9.25 Tota...
Diamond, Platinum
5 Marquise 1.50 Carat Diamond Band Ring Platinum
Located in Honolulu, HI
Item Specifications: Metal: Platinum 900 Diamond Count: 5 marquise cut Total Diamond Carat Weight: ~1.50 carats Diamond Color: G Diamond Clarity: VS-SI1 Ring Size: 7 Total We...
Diamond, Platinum
14mm Pearl with Baguette and Round Diamonds in Platinum Cocktail Ring
Located in Miami, FL
14mm cultured white pearl, beautifully accented by 0.84 carats of baguette and round-cut diamonds, set in Platinum 900 cocktail ring. Details: Item Type: Women's Cocktail Ring Met...
Diamond, Pearl, Platinum
Tahitian Pearl Diamond Ring Platinum
Located in Honolulu, HI
Ring Specifications: Metal: Platinum 900 Total Weight: 8.1 Grams Pearl Diameter: 10.8 mm Pearl Type: Tahitian Pearl Diamond Count: 6 Diamond Color: G Diamond Clarity: VS Di...
Diamond, Pearl, Platinum
10.78 Carat Natural Imperial Topaz Diamond Estate Platinum Ring
Located in Brunswick, ME
Estate sparkling classic cocktail natural brownish orangish Imperial topaz and diamond ring platinum 900 Main stone: Untreated Natural Topaz Oval Cut 10.46 carat Side stone: Diamond ...
Imperial Topaz, Topaz, Diamond, Platinum
Opal Diamond Pendant. PT900 Platinum Opal Diamond Halo Pendant Necklace. Genuine
Located in Port Charlotte, FL
Platinum 900. Hallmarked appropriately. Details: 15mm by 19mm Pendant 0.39 round diamonds 10mm by 13mm oval cabochon opal 2.50ct -----Green yellow and Blue Fire. 4.2grams
Platinum
1.58 Carat Oval-Cut Blue Sapphire and Diamond Platinum Filigree Ring
Located in Miami, FL
Natural 1.58 Carat Oval-Cut Blue Sapphire and 0.18 CTTW Round-Cut Diamond Filigree Setting in Platinum 900 Ring Size 6. Details: Item Type: Cocktail Ring Metal: Platinum 900 Size: ...
Diamond, Sapphire, Blue Sapphire, Platinum
GIA Certified 11.22 Carat Green Tourmaline and Diamond Platinum Filigree Ring
Located in Miami, FL
This GIA certified 11.22 CT emerald-cut green tourmaline, is set on a platinum 900 band. The 10 0.25 CTTW prong set round-cut diamonds, enhance the gemstones rich green color.
Diamond, Tourmaline, Platinum
2.78 Carat Black Opal and Diamond Halo Platinum Filigree Ring
Located in Miami, FL
Set in a smooth textured platinum 900 ring setting. The center stone bears a rich, vibrant color pattern that radiated different hues depending on how the ring is worn.
Diamond, Opal, Black Opal, Platinum
1.58 Carat Oval-Cut Blue Sapphire and Diamond Platinum Filigree Ring
Located in Miami, FL
Natural 1.58 Carat Oval-Cut Blue Sapphire and 0.18 CTTW Round-Cut Diamond Filigree Setting in Platinum 900 Ring Size 6. Details: Item Type: Cocktail Ring Metal: Platinum 900 Size: ...
Diamond, Sapphire, Blue Sapphire, Platinum
Platinum 3.19 Carat Indicolite Tourmaline & Diamond Vintage Filigree Ring Size 6
Located in Miami, FL
This stunning ring features a vivid green checkerboard-cut 3.19 CT tourmaline stone set on a platinum 900 band. The center stone is complimented by 0.27 Ct round-cut diamonds on eith...
Diamond, Tourmaline, Platinum
11.5mm White Pearl and Round Cut Diamond Accent Platinum Ring
Located in Miami, FL
11.5mm White Cultured Pearl and Round Cut Diamond Accent Platinum Ring. Ring size 7, adjustable. Details: Item Type: Ring Metal: Platinum 900 Size: 7 (adjustable) Weight: 6.65 grams...
Diamond, Pearl, Platinum
White Akoya Pearl and Diamond Ring Platinum
Located in Honolulu, HI
Ring Specifications: Metal: Platinum 900 Total Weight: 6.8 Grams Pearl Diameter: 9.2 mm Pearl Type: White Akoya Pearl Diamond Count: 6 brilliant cut Diamond Color: G Diamond ...
Diamond, Pearl, Platinum
Studio 0.46 Carat Yellow & White Diamonds Platinum/18k Yellow Gold Band Ring
Located in Miami, FL
The ring measures 8.22mm in height and is marked STUDIO 18k platinum 900
White Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum
Diamond Flower Two Toned Ring in 18K Yellow Gold and Platinum
Located in Honolulu, HI
Item Specifications: Metal: Platinum 900 and 18K Yellow Gold Ring Size: 5.5 Total Weight: 4.4 Grams Diamond Count: 7 brilliant cut Diamond Color: G-H Diamond Clarity: VS2-SI1...
Diamond, 18k Gold, Yellow Gold, Platinum
10.96 Carat Rubellite Tourmaline and Diamond Accent Platinum Ring
Located in Miami, FL
10.96 Carat Cushion Checkerboard Cut Rubellite Tourmaline and Round Cut Diamond in Platinum 900 Ring in Size 7.75. Details: Item Type: Cocktail Ring Metal: Platinum 900 Size: ...
Diamond, Rubelite, Ruby, Tourmaline, Platinum
Oval Green Cabochon Jade Baguette Diamond Ring Ballerina Ring Platinum
Located in Honolulu, HI
Ring Specifications: Metal: Platinum 900 Total Weight: 10.4 Grams Ring Height: 21 mm tall Diamond Carat Weight: 0.76 carats Jade Carat Weight: ~4.15 carats Jade Measurements:...
Diamond, Jade, Platinum
Natural 15.50 Carat Graduated Diamond Riviera Tennis Necklace in Platinum 18"
By Gad & Co.
Located in Miami, FL
Offering a classic riviera setting where the diamonds gradually get larger towards the largest center stone in the middle. All set in a platinum 900 4 prong setting, 18 inches in len...
Diamond, Platinum
GIA Certified 6.40 Carat Blue Indicolite Tourmaline Vintage Retro Platinum Ring
Located in Miami, FL
GIA certified 6.40 Carat Greenish Blue Indicolite Tourmaline and Diamond Vintage Retro Style Platinum 900 Ring. Size 10.75. Ideal as a men's statement ring or ladies cocktail ring.
Diamond, Tourmaline, Indicolite, Platinum
10.96 Carat Rubellite Tourmaline and Diamond Accent Platinum Ring
Located in Miami, FL
10.96 Carat Cushion Checkerboard Cut Rubellite Tourmaline and Round Cut Diamond in Platinum 900 Ring in Size 7.75. Details: Item Type: Cocktail Ring Metal: Platinum 900 Size: ...
Diamond, Rubelite, Ruby, Tourmaline, Platinum
0.98 Carat Baguette Colombian Emerald, Diamond Platinum Thin Ring
By Gad & Co.
Located in Miami, FL
Colombian Emerald and Diamond 5 Stone Platinum Ring. This dainty ring is crafted from platinum 900.
Diamond, Emerald, Platinum
Vintage Estate 6.01 Carat No Heat Star Ruby & Diamond Platinum Ring
Located in Miami, FL
All set in platinum 900, the free-form curved design adds sophistication to the overall vintage elegance of the ring.
Diamond, Ruby, Star Ruby, Platinum
7.04 Carat Star Sapphire and Diamond Platinum Ballerina Ring
Located in Miami, FL
This magnificent ring is crafted from platinum 900 featuring a cathedral style band and gorgeous filigree.
Diamond, Sapphire, Star Sapphire, Platinum
1 Carat Round Cut Diamond 5 Stone Platinum Dancing Pendant Necklace
Located in Miami, FL
1 carat total natural round cut white diamond 5 stone dancing pendant necklace. Set in platinum 900. Metal purity stamped on the back. Details: Item Type: Pendant Necklace Metal: Pl...
Diamond, White Diamond, Platinum
White Akoya Pearl and Double Diamond Halo Platinum Ring
Located in Honolulu, HI
Ring Specifications: Metal: Platinum 900 Total Weight: 5.0 Grams Pearl Diameter: 8.5 mm Pearl Type: White Akoya Pearl Diamond Count: 40 brilliant cut Diamond Color: G-H Diamo...
Diamond, Pearl, Platinum
2.51 Carat Diamond Pavé Cluster Band Platinum Ring
Located in Miami, FL
2.51 Carat Total Natural Round Cut Diamond Pavé Cluster Band Platinum 900 Ring. Size 7.25, adjustable. Details: Item Type: Women's Ring Metal: Platinum 900 Size: 7.25 Weight: 17.7...
Diamond, Platinum
Columbian Emerald and Baguette Diamond Ballerina Ring Platinum
Located in Honolulu, HI
Item Specifications: Metal: Platinum 900 Ring Size: 5.25 (resizing available for a fee) Total Weight: 6.2 Grams Diamond Color: G Diamond Clarity: VS Diamond Carat Weight: 0.50 ...
Diamond, Emerald, Platinum
1.46 Carat Blue Sapphire & Diamond Platinum 3 Row Floral Cluster Band Ring
Located in Miami, FL
Natural, Seven round blue sapphires totaling 0.83 carats form a vivid floral cluster center flanked by two rows of round brilliant diamonds totaling 0.63 carats in a platinum 900 thr...
Diamond, Sapphire, Platinum
30 Carat Oval Cut Ruby & Mixed Cut Diamond Tennis Necklace in Platinum
By Gad & Co.
Located in Miami, FL
Natural Ruby and Diamond tennis necklace, set in platinum 900. Featuring 18.68 carats in oval-cut Rubies and 11.72 carats in round and baguette cut Diamonds.
Diamond, Ruby, Platinum
10.91 Carat Oval Jadeite Jade & Baguette Diamond Platinum Filigree Ring
Located in Miami, FL
10.91 carat oval cabochon cut natural jadeite jade and baguette diamond side side stone ring in platinum 900 filigree setting. Handmade, with all natural gemstones and an adjustable ...
Diamond, Jade, Platinum
GIA Cert. 2.59 Carat Colombian Emerald & Diamond Platinum Gold Cocktail Ring
Located in Miami, FL
GIA-certified 2.59 carat minor oil Colombian emerald cocktail ring set in 18K yellow gold prongs, surrounded by round brilliant and baguette diamonds totaling 0.45 carats in platinum...
Diamond, Emerald, Gold, 18k Gold, Yellow Gold, Platinum
Natural Blue Zircon and Diamond Rectangular Ring in Platinum
Located in Honolulu, HI
Item Specifications: Metal: Platinum 900 Natural Blue Zircon Measurements: 7.37 mm x 7.46 mm x 4.88 mm Natural Blue Zircon Carat Weight: 2.25 carats Diamond Count: 34 brill...
Diamond, Zircon, Blue Zircon, Platinum
GIA Certified 5.38 Carat Black Opal and Diamond Ballerina Vintage Platinum Ring
Located in Miami, FL
GIA Certified vintage 5.83 carat black opal and diamond halo ballerina ring in platinum 900. Featuring a center stone that is absolutely captivating, bearing tremendous color, luster...
Diamond, Opal, Black Opal, Platinum
8.55 Carat Untreated Fei Cui A Jadeite Jade & Diamond Bezel Platinum Ring
Located in Miami, FL
8.55 Carat Oval Cut Untreated Grade A "Fei Cui" Jadeite Jade with Diamonds in Platinum 900 Bezel set Ring. Details: Item Type: Cocktail Ring Metal: Platinum 900 Size: 7.75 (adjustab...
Diamond, Jade, Platinum
1.67 Carat Oval Cut Ruby and Diamond Three-Stone Band Ring
Located in Miami, FL
1.67-carat oval cut rubies and 0.17 carats of baguette and oval-cut diamonds. Crafted in platinum 900 three-stone ring, size 6.25. Details: Item Type: Three Stone Ring Metal: Plati...
Diamond, Ruby, Platinum
Antique Art Deco Platinum 2mm Floral Eternity Stackable Band Ring sz 5.5
Located in Montclair, NJ
Material: Solid Platinum 900+ Total Weight: 3.58 Grams Overall Width: 2mm (0.08") (top of the ring - north to south) Overall Height: 1.9mm rise off the finger Size: 5.5 (Fitted on a...
Platinum
0.77 Round Cut Ruby and Diamond Platinum Cluster Band Ring
Located in Miami, FL
Natural 0.77-carat round-cut ruby, beautifully complemented by 0.48 carats total weight of round-cut diamonds in elegant platinum 900 cluster style band ring, size 7. Details: Item...
Diamond, Ruby, Platinum
Vintage 0.97 Carat Oval Blue Sapphire & Diamond Filigree in Platinum Floral Ring
Located in Miami, FL
0.97 carat oval blue sapphire measuring 5.4 x 4.8mm is set in a platinum 900 ring featuring an ornate filigree floral gallery with mixed baguette and round brilliant diamond accents ...
Diamond, Sapphire, Platinum
Antique Art Deco Platinum 2.1mm Detailed Engraved Band Ring sz 8.5
Located in Montclair, NJ
Material: Solid Platinum 900 Total Weight: 3.27 Grams Overall Width: 2.1mm (0.08") (top of the ring - north to south) Overall Height: 1.5mm rise off the finger Size: 8.5 (Fitted on ...
Platinum
Oval Tanzanite and Diamond Studded Wide Dome Ring in Platinum
Located in Honolulu, HI
Item Specifications: Metal: Platinum 900 Ring Size: 7.75 Ring Height: 10.91 mm Total Weight: 3.2 grams Gemstone Specifications: Center Gemstone: Natural Tanzanite Color: Pur...
Diamond, Tanzanite, Platinum
Emerald Ring. Genuine Emerald and Diamond Platinum Ring. PT900 Plat Marquise
Located in Port Charlotte, FL
Channel set diamonds. Platinum 900 Shank. Condition: Shows minimal signs of wear.
Platinum
13mm South Sea Pearl & Baguette Diamond Halo Platinum Ballerina Ring
Located in Miami, FL
The platinum 900 framework provides exceptional durability and hypoallergenic properties while the substantial 14.71 gram weight ensures secure stone setting.
Diamond, Pearl, Platinum
2.09 Carat Oval Cut No Heat Ruby & Diamond Halo Platinum Ring
Located in Miami, FL
The ruby is prong set in 18k yellow gold and the rest of the ring is crafted in platinum 900. The ring weights 8.81 grams and is size 6 (adjustable).
Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Platinum
Modern Platinum Ring Diamonds Rubelite
Located in Zurich, Zollstrasse
Modern Platinum Ring 900 featuring a lovely intense pear shape Rubelite weiging 3.01 ct and pavé set brilliant cut Diamonds weighing 0.45 ct.
Diamond, Rubelite, Platinum
Antique Art Deco Platinum 1.9mm Wheat Etched Pattern Band Ring Size 3.5
Located in Montclair, NJ
Material: Signed Plat. Solid Platinum .900+ Total Weight: 2.1 Grams Overall Width: 1.9mm (0.07") (top of the ring - north to south) Overall Height: 1.6mm rise off the finger Size: 3...
Platinum
Stuart Moore Platinum & Yellow Gold 1.20ctw Bezel Sapphire Oval Stud Earring
Located in Montclair, NJ
.) - 1.0 - 1.20ctw (approx.) Material: Platinum .900+ and Yellow Gold Weight: 8.96 Grams Backing: Post w/ Butterfly Clasp (Pierced ears are required.)
Sapphire, Yellow Gold, Platinum
3.02 Carat Cushion Cut Burma Ruby & Round Diamond Ring in Platinum & 18K Gold
By Gad & Co.
Located in Miami, FL
The shank is set in platinum 900 and the 6 prongs are 18 karat yellow gold.
Diamond, Ruby, 18k Gold, Yellow Gold, Platinum
Diamond Platinum & 18K Gold Two Tone Pave Band Ring
Located in Miami, FL
Two-tone band ring in platinum 900 and 18K yellow gold featuring pave-set round brilliant diamonds totaling 0.73 carats (E-F/VS) covering domed center section.
Diamond, Gold, 18k Gold, Yellow Gold, Platinum
10.04 Carat Aquamarine Cushion Checkerboard Cut & Diamond Halo Platinum Ring
Located in Miami, FL
Natural aquamarine and diamond cocktail ring featuring a 10.04 carat cushion checkerboard-cut aquamarine surrounded by 0.35 carats of round diamonds in platinum 900 with intricate sc...
Aquamarine, Diamond, Platinum
Bora & Co 37.01ct Blue Cabochon Sapphire Platinum Ring, Modern Design
Located in New York, NY
Expertly crafted in Platinum 900, this remarkable piece embodies timeless sophistication, strength, and the unparalleled craftsmanship that define Bora & Co fine jewelry.
Sapphire, Platinum
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 rings, vintage engagement rings or Art Deco engagement rings.
Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.
Ancient Egyptians referred to the vibrant stone as the “gem of the sun.”
There are many ways to showcase a diamond, from traditional prongs to a smooth, streamlined bezel. Here’s everything you need to consider.
The vintage bombé ring is bursting with color and timeless style.
Zircon is a magnificent and underrated natural gemstone that has been worn and adored for centuries.
Givers of fine gems enjoy surprise more than receivers, and women more than men. Find out what else our survey of 3,000 Americans revealed.
If diamonds don’t seem right, what about a magnificent sapphire, ruby or emerald?
Accounting for just 1 percent of all diamonds, these marvels of nature are exceedingly rare and gorgeously complex.
Learn about these antique jewelry styles, then choose a design that speaks to you.