Vintage 13.50 Carat GIA Purplish-Pink Tourmaline and Diamond 18K & Platinum Ring
By Gad & Co.
Located in Miami, FL
18K yellow gold and Platinum ring, weighing 16.28 grams, featuring a GIA Certified 13.50-carat cushion-cut Purplish-Pink Tourmaline, set in a secured prong, crafted from 18K yellow g...
Diamond, Tourmaline, 18k Gold, Platinum
Vintage 1.85 Carat Marquise Cut Diamond Cocktail Platinum East-West Ring
Located in Miami, FL
Vintage marquise cut natural diamond cluster east-west set cocktail ring in platinum 900. Set with a stunning handmade two prong setting fastening the diamonds.
Diamond, Platinum
Contemporary Platinum Engagement Ring, 1.56ct GIA Diamond
Located in Lisboa, PT
Handcrafted in platinum (900‰ purity), this exceptional piece features a natural brilliant-cut diamond weighing 1.56 carats, accompanied by a GIA report, graded D for colour and SI2 ...
Diamond, Platinum
$15,840Sale Price|20% Off
GIA Certified 7cts Ceylon Blue Sapphire with Diamond Ring Set in Platinum
Located in Bangkok, TH
Ceylon Blue Sapphire 7.56 carats with Diamond 0.86 carat Ring set in Platinum 900 Settings (GIA Certified) Width: 1.1 cm Length: 1.3 cm Ring Size: 52 Total Weight: 12.85 grams "W...
Diamond, Blue Sapphire, Platinum
$45,600Sale Price|20% Off
5.46 Ct GRS GIA Two Certificate Natural unheated Burma Mogok Ruby Red color
Located in bangkok, TH
E051 GRS,GIA Two Certificate 5.46 Ct Natural unheated Burma Mogok Ruby Red color with Ring platinum Gold 1-Main stone : 5.46ct Natural Ruby Unheated Mogok burma Gemstone GRS,GIA ...
Ruby
Contemporary Solitaire Diamond Platinum Engagement Ring
Located in Lisboa, PT
Handcrafted in platinum (900‰ purity), this exquisite piece centers on a natural brilliant-cut diamond weighing 1.56 ct, certified by GIA for its exceptional D color and SI2 clarity.
Diamond, Platinum
GIA Certified 6.75 Carat Oval Blue Sapphire and Diamond Ballerina Ring
Located in Miami, FL
GIA certified 6.75 carat oval cut natural blue sapphire with a a baguette cut diamond halo in a ballerina style platinum 900 ring setting. Ring size 7, adjustable.
Diamond, Sapphire, Blue Sapphire, Platinum
1 Carat Pave Diamond Dome Platinum Band Ring
Located in Miami, FL
Details: Item Type: Pave Diamond Band Metal: Platinum 900 Size: 6 Weight: 4.70 grams Band Width: 5mm Shape: Dome Shape Diamond Details: Type: Natural Diamonds Carat: 1.05 Carat Colo...
Diamond, White Diamond, Platinum
GIA Cert. 5.10 Carat Untreated Black Opal Diamond Halo Platinum Starburst Ring
Located in Miami, FL
GIA-certified 5.10 carat natural black opal with no color treatment, displaying vivid full-spectrum play-of-color, set in a four-prong platinum 900 mounting within a starburst single...
Agate, Diamond, Platinum
GIA Certified 6.03 Carat Oval Ceylon Sri Lanka Sapphire & Diamond Platinum Ring
Located in Miami, FL
GIA Certified natural 6.03 carat oval cut Sri Lanka origin heated blue sapphire and 1.36 carat total weight diamond ballerina-style cocktail ring in platinum 900, featuring a vivid r...
Sapphire, Diamond, Platinum
Platinum 0.57ct Colombian Emerald + 0.95ct Diamond Pendant Necklace 17.5''
Located in Addison, TX
Details Metal (Pendant): Platinum 900 (PT900) Metal (Chain): Platinum 850 (PT850) Necklace Length: 17.5 Inches Chain Style: Box Chain with Ball Slide Clasp Center Stone: Natural Colo...
Diamond, Emerald, Platinum
Platinum 1.27ct Jelly Opal and Diamond Ring
Located in New York, NY
Weight: 4.8 Grams Stone: 1.27ct Ethiopian Jelly Opal, Diamond 0.29tcw Measurements: 8 x 16 x 7.5mm Size: 6.75 Hallmark: Pt900 Metal: Platinum 900 Item #: BR-1611-060325-11
7.15 Carat Oval Aquamarine & Diamond Floral Filigree Platinum Ring
Located in Miami, FL
This exquisite Platinum 900 Aquamarine Ring features a 7.15-carat oval aquamarine measuring 13.2 x 10.5mm, surrounded by 0.33 carat total weight diamonds.
Aquamarine, Diamond, Platinum
GIA Cert. 1.50 Marquise Diamond E/VS2 Cluster Halo Platinum Band Cocktail Ring
Located in Miami, FL
At 15 grams of solid platinum 900, this ring has the weighty, enduring quality of the finest mid-century fine jewelry construction.
Diamond, Platinum
Platinum GIA 30.2ctw Rectangular Pastel No Heat Sapphire Diamond Necklace
Located in Montclair, NJ
Total Carat Weight: 30.2 (approx.) Material: Solid Platinum .900+ (tested) - Stamped PT950 Material Weight: 44.61 Grams Chain Length: 17 Inches Clasp: Push Clasp w/ Fold Under Safet...
Diamond, Sapphire, Platinum
1940s Mid-Century Platinum Diamond Spray Ring, Attributed to Frederick Fink
Located in Miami, FL
Made in 900 platinum/iridium, the ring dates to the 1940s–1950s and showcases the refined craftsmanship characteristic of Fink’s New York workshop.
Diamond, Platinum
1.85 Carat Untreated Jadeite Jade and Diamond Platinum Ring HK Certified
Located in Miami, FL
Item Details: Type: Ring Metal: Platinum 900 Weight: 5.10 Grams Size: 6.25 (adjustable) Setting: Split Band Center Stone Details: Type: Natural Untreated Jade Carat: 1.85 Cut: Oval...
Diamond, Jade, Platinum
3 Carat Diamond Tennis 4-Prong Bracelet in Platinum 4MM 7"
Located in Miami, FL
Item Details: - Item Type: Tennis Bracelet - Metal: Platinum (900 Purity) - Closure Type: Box closure - Setting: 4 prong - Length: 7 Inches - Width: 4mm - Weight: 11 Grams Gemstone...
Diamond, White Diamond, Platinum
0.5 Carat Round Diamond Bamboo Style Platinum Channel Set Band Ring
Located in Miami, FL
0.51 carats total weight of round-cut natural white diamonds, beautifully set in a unique platinum bamboo-style setting. Details: Item Type: Women's Band Ring Metal: Platinum 900 S...
White Diamond, Platinum
1.85 Carat Untreated Jadeite Jade and Diamond Platinum Ring HK Certified
Located in Miami, FL
Item Details: Type: Ring Metal: Platinum 900 Weight: 5.10 Grams Size: 6.25 (adjustable) Setting: Split Band Center Stone Details: Type: Natural Untreated Jade Carat: 1.85 Cut: Oval...
Diamond, Jade, Platinum
7.50 Carat Untreated Oval Green Jadeite with Baguette Diamonds in Platinum Ring
Located in Miami, FL
7.50 Carat Untreated Oval Cabochon Cut Green Natural Jadeite Jade with Baguette Diamonds in Platinum 9000 Ballerina Ring. Details: Item Type: Cocktail Ring Style: Ballerina, Ha...
Diamond, Jade, Platinum
$54,000Sale Price|20% Off
Bora & Co GRS Certified 4.05ct Colombian Emerald & Diamond Ring
Located in New York, NY
Expertly crafted in Platinum 900 with a total weight of 8.9 grams, this extraordinary piece embodies timeless sophistication, luxury, and the enduring allure of fine jewelry.
Diamond, Emerald, Platinum
1.58 Carat Blue Round Sapphire & Baguette Diamond Platinum 6MM Band Ring
Located in Miami, FL
Details: Item Type: Band Ring Metal: Platinum 900 (Hypoallergenic and safe for daily wear, including in the shower) Size: 6 1/2 (adjustable) Weight: 7.78 Grams Band Width: 6mm Cente...
Diamond, Sapphire, Platinum
Certified 5.80 Carat Natural Jadeite Jade and Baguette Diamond Platinum Ring
Located in Miami, FL
HKJ&S Certified 5.80 Carat Natural Jadeite A Fei Cui and Diamond in Platinum900 Statement Ring in Size 7 Details: Item Type: Statement Ring Metal: Platinum 900 Ring Size: 7 (adjusta...
Diamond, Jade, Platinum
$22,800Sale Price|20% Off
Bora & Co GRS Certified 3.60ct Colombian Emerald & Diamond Ring
Located in New York, NY
Expertly handcrafted in Platinum 900 with a total weight of 10.1 grams, this remarkable piece captures the essence of timeless sophistication and refined luxury — a true masterpiece ...
Diamond, Emerald, Platinum
GRS Certified 2cts Pigeon's Blood Burmese Ruby with Diamond Ring in Platinum
Located in Bangkok, TH
Ruby 2.01 carats with two Diamonds on either side total 1.08 carats, and the rest of the Diamond total 1.27 carats Ring and Ring Jacket set in Platinum 900 Settings (GRS Certified) ...
Diamond, Ruby, Platinum
1.73 Carat Jadeite Jade Fei Cui & Diamond Halo Platinum Ballerina Filigree Ring
Located in Miami, FL
Item Details: Type: Ring Metal: Platinum 900 Weight: 8.72 Grams Size: 6.5 Setting: Cathedral, Filigree Center Stone Details: Type: Natural Jade Carat: 1.73 Cut: Oval Color: Bright G...
Diamond, Jade, Platinum
7.20 ct Diamond, Platinum and Gold Scroll-and-Spray Clip Brooch
Located in Lisboa, PT
Elegant and sculptural, this clip brooch showcases a sophisticated scroll motif crafted in platinum 900 and 18 kt white gold, richly set with approximately 61 diamonds with aproximat...
Diamond, Gold, 18k Gold, Platinum
Art Deco Platinum Drop Earrings with 5.80ct Old European Cut Diamonds
Located in Braintree, GB
Crafted from high-purity 900 platinum, these earrings exemplify the refined geometric simplicity of the Art Deco period.
Diamond, Platinum
Art Deco Platinum 5-Row Pearl Bracelet with 8 Ctw in Emeralds and Diamonds
Located in Miami, FL
Item Details: - Type: Bracelet - Metal: Platinum 900 - Weight: 19.28 Grams - Era: Art Deco - Setting: Prong - Size: 7.25 inches - Face: 3.8 x 2.75 CM Emerald Details: - Type: Natura...
Diamond, Emerald, Pearl, Platinum
Vintage Platinum GIA 1.35ct Burma No Heat Sapphire Solitaire Pendant Necklace
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Sapphire - Oval Brilliant Cut - Prong Set - Violetish Blue Color - No Heat - Burma - 1.35ct (exact) ** See Certification Details Below for Complete ...
Sapphire, Gold, White Gold, Platinum
Vintage 5.49ct Burmese Spinel Grayish Violet-Purple Solitaire Platinum Ring
By Emeralds Maravellous
Located in Brunswick, ME
The stone demonstrates good saturation and transparency, with a cut designed to amplify both luminosity and chromatic intensity. Secured in refined platinum 900, the minimalist solit...
Spinel, Platinum
$78,400Sale Price|20% Off
10.15ct Asscher Cut Diamond Platinum Eternity Band Ring
Located in Chicago, IL
Expertly crafted in luxurious platinum 900, the ring features a refined U-shaped setting that allows maximum light to pass through each stone, enhancing brilliance and emphasizing th...
Diamond, White Diamond, Platinum
Certified 30 Carat Untreated Jadeite Jade & Diamond Platinum Ring
Located in Miami, FL
Details: Item Type: Statement Ring Metal: Platinum 900 Size: 6.75 (adjustable) Weight: 12.57 Grams Center Stone Details: Type: Natural Jadeite Jade Grade A, Fei Cui Carat: 30 Carat ...
Diamond, Jade, Platinum
9 Carat Untreated Jadeite Jade Fei Cui and Diamond Platinum Ring HK Certified
Located in Miami, FL
Perfectly crafted in a size 7, this piece effortlessly blends timeless elegance with modern sophistication Item Details: Type: Ring Metal: Platinum 900 Weight: 6.79 Grams Size: 7 (a...
Diamond, Jade, Platinum
Platinum 11.84 Carat Round Black Diamond Engagement and Pink Diamond Prong Ring
Located in Miami, FL
Details: - Item Type: Ring - Metal: Platinum 900 - Size: 6 1/4 (adjustable) - Weight: 8.95 grams Stone Details: - Stone: Black Diamond - Carat: 11.84 - Color: Black - Cut: Roun...
Diamond, Black Diamond, Ruby, Platinum
$11,840Sale Price|20% Off
Bora & Co GRS Certified 3.21ct Colombian Emerald & Diamond Ring
Located in New York, NY
Accentuating its brilliance are 1.13 carats of VS white natural diamonds, adding a refined sparkle that enhances the emerald’s captivating depth. Masterfully set in Platinum 900, wi...
Diamond, Emerald, Platinum
5.32 Carat Natural Jadeite Jade and Diamond Filigree Platinum Ballerina Ring
By Unbranded
Located in Miami, FL
Details: Item Type: Ballerina Ring Metal: Platinum 900 Size: 6 1/4 Weight: 8.80 Grams Setting: Cathedral, Filigree Center Stone Details: Stone Type: Untreated Jadeite Jade (Fei Cui)...
Diamond, Jade, Platinum
3.29 Carat Oval Blue Sapphire & Diamond in Platinum Engagement Ring
Located in Miami, FL
Details: Item Type: Engagement Ring Metal: Platinum 900 (Hypoallergenic and safe for daily wear, including in the shower) Size: 6 3/4 (Adjustable) Weight: 6.03 Grams Center Stone De...
Diamond, Sapphire, Platinum
$15,160Sale Price|20% Off
Art Deco 1930 Convertible Pendant Brooch Platinum 11.73 Ctw Diamonds & Emeralds
Located in Miami, FL
This convertible pendant and brooch has been crafted in solid platinum .900/.999 and fitted at the reverse with a hinged pin bar with a security trombone lock to wear as a brooch.
Diamond, White Diamond, Emerald, Platinum
5.83 Carat Oval No Heat Blue Sapphire & Diamond Halo Platinum Pendant Necklace
Located in Miami, FL
GRS Certified 5.83 Carat Oval Cut No Heat Sri Lanka Origin Blue Sapphire and Round Cut Diamond Halo Platinum Pendant Necklace. Item Details: Item Type: Pendant Necklace Metal Typ...
Diamond, Sapphire, Blue Sapphire, Platinum
Tokyo Matsuda Ubiwa Platinum 0.60ct Diamond Tension Set Ring
Located in New York, NY
Weight: 24.7 Grams Stone: H VS1 0.60ct Diamond Measurements: 25.4 x 6.9 x 24.22mm Size: 7 Hallmark: Tokyo Matsuda, Ubiwa, 2001 Metal: Platinum 900 Item #: BR-1913-060326-18
Diamond, Platinum
Natural 1.52 Carat Oval Blue Sapphire and Diamond Platinum Floral Ring
By Gad & Co.
Located in Miami, FL
Natural Oval Cut Blue Sapphire and Diamond Platinum Floral Motif Ring. This cocktail ring is crafted from a platinum 900 ring setting.
Diamond, Sapphire, Blue Sapphire, Platinum
GIA Certified 1.37 Carat Spinel Diamond Platinum Three-Stone Engagement Ring
Located in Stamford, CT
The Spinel is certified by the GIA as natural with no indications of heating. 1 cushion cut natural orange red Spinel, approx. total weight 1.37cts, SI1, 7.67 x 4.98 x 4.30mm, GIA ...
Diamond, Spinel, Platinum
AGL Certified 5.31 Carat No Oil Emerald & Trillion Diamond 3 Stone Ring
By Gad & Co.
Located in Miami, FL
Additionally, the ring boasts two triangular (trillion) cut white diamonds on each side of the emerald, totaling 1.10 carats and measuring 6 mm each, and 28 round-cut white diamonds,...
Diamond, White Diamond, Emerald, Gold, 18k Gold, White Gold, Yellow Gold...
1.50 CT. Oval Red Ruby GIA Certified in Platinum Diamond Ring
Located in Houston, TX
Ring Size: 5.25 US - complimentary resizing available upon request Metal: Platinum - 900 Total Estimated Stone Weight: 2.00 ct.
Diamond, Ruby, Platinum
GIA Cert 10.47 Carat Oval Cut Tourmaline & Diamond in Platinum Cocktail Ring
Located in Miami, FL
Details: Item Type: Cocktail Ring Metal: Platinum 900 Size: 7 (adjutable) GIA Certified Center Stone Details: Type: Chrome Tourmaline Color: Green Carat: 10.47 Cut: Oval Measuremen...
Diamond, Tourmaline, Platinum
Platinum GIA 13.65ctw High Quality Blue Star Sapphire & Diamond Dual Finish Ring
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Star Sapphire - Oval Cabochon Cut - Bezel Set - Incredible Clean Blue Color - No Heat- 13.19ct (exact) ** See Certification Details Below for Comple...
Diamond, Sapphire, Platinum
20.96 Oval Light Pink Kunzite and Diamond in Platinum Filigree Cocktail Ring
Located in Miami, FL
Details: Item Type: Statement Ring Metal: Platinum 900 Size: 7 Weight: 13.15 Grams Center Gemstone Details: Type: Kunzite Carat: 20.96 Carat Color: Light Pink Cut: Oval Cut Side...
Diamond, Kunzite, Platinum
Certified 2.69 Carat Oval Bright Green Untreated A Jadeite Jade Platinum Ring
Located in Miami, FL
2.69 Carat Oval-Shaped Cabochon Bright Green Natural Type A "Fei Cui" Jade with Diamonds Side Stone in Platinum 4 Prong Ring Details: Item Type: Cocktail Ring Metal: Platinum 900 S...
Diamond, Jade, Platinum
$45,360Sale Price|20% Off
Bora & Co GRS Certified 7.12ct Columbian Emerald & Diamond Ring
Located in New York, NY
Meticulously handcrafted in Platinum 900, this ring has a total weight of 12.2 grams, embodying both strength and sophistication.
Diamond, Emerald, Platinum
$45,360Sale Price|20% Off
Bora & Co GRS Certified 7.12ct Columbian Emerald & Diamond Ring
Located in New York, NY
Meticulously handcrafted in Platinum 900, this ring has a total weight of 12.2 grams, embodying both strength and sophistication.
Diamond, Emerald, Platinum
GIA Certified 2.91 Carat Colombian Emerald & Diamond Platinum Ring
Located in Miami, FL
Details: Item Type: Vintage Ring Metal: Platinum 900 Weight: 4.33 grams Ring Size: 6 (adjustable) Center Stone Details: Type: Emerald Carat: 2.91 Carat Color: Green Cut: Square Step...
Diamond, Emerald, Gold, Yellow Gold, Platinum
GIA Certified 1.71Ct Colombian Emerald Pendant with Natural Diamonds in Platinum
Located in Singapore, SG
Colombian Emerald Pendant in Platinum 900 Features : Main Gemstone - Colombian Emerald Total Carat Weight (1pc) -1.71Ct Measurement of gemstone - 7.87x6.46x4.58 mm Color - Green...
Emerald, Diamond, Platinum
Certified Untreated 8.14 Carat Jadeite Jade A Fei Cui Platinum Ring
Located in Miami, FL
Details: Item Type: Statement Ring Metal: Platinum 900 Size: 7 (adjustable) Weight: 6.29 Grams Center Stone Details: Type: Jadeite Jade Grade A "Fei Cui" Carat: 8.14 Carat Color: G...
Diamond, Jade, Platinum
GIA 1.38 Carat Emerald Cut Colombian Emerald & Diamond Platinum Ballerina Ring
Located in Miami, FL
GIA-certified 1.38 carat emerald cut Colombian emerald and 1.63 carat total diamond platinum 900 ballerina halo cocktail ring, set in a yellow gold prong basket surrounded by a round...
Diamond, Emerald, Gold, 18k Gold, White Gold, Yellow Gold, Platinum
1.16 Carat Three Row White and Blue Diamond Channel Seting Band Ring
Located in Miami, FL
Details: Item Type: Band Ring Metal: Platinum 900 Size: 8.5 Weight: 9.60 Grams Center Stone Details: Type: Natural Diamond Carat: 1.16 CTTW Color: Blue and White Cut: Round Brill...
Diamond, 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.”
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Zircon is a magnificent and underrated natural gemstone that has been worn and adored for centuries.
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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.