Tiffany & Co. Tiffany 'Forever' Unisex Polished Platinum Wedding Band Ring
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 9.5 Metal: Platinum Weight: 8.7 grams Band Width: 4.5 mm Outer diameter: 22.75 mm Stamped: Tiffany & Co. PT 950 Estate Condition: Excellent, professionally cleaned an...
Platinum
Tiffany & Co. Jazz Pagoda Diamond Chandelier Drop Pendant Necklace in Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Metal: Platinum Natural Diamonds: 1.25 carats Diamond cut: Round Brilliant Diamond color: F-G Diamond clarity: VS1-VS2 Drop length: 1.75" Drop width: 11 mm Chain length: 17" Chain wi...
Diamond, Platinum
Art Deco Style Platinum 1.13 ct Sapphire and Diamond Oval Plaque Ring
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 4.83 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26324Q3238 Certificate date: 4 February 202...
Platinum
Art Deco Style Platinum Sapphire and Diamond Pierced Shield Ring
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 3.68 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26401Q6488 Certificate date: 6 February 202...
Platinum
Art Deco Style Platinum Three Stone Sapphire and Diamond Navette Ring
Located in Braintree, GB
Dimensions Ring size: UK N / US 6¾ / EU 54 Weight: 3.92 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26631Q3169 Certificate date: 11 February 2026...
Platinum
Art Deco Style Platinum Sapphire and Diamond Octagonal Target Ring
Located in Braintree, GB
Dimensions Ring size: UK N / US 6¾ / EU 54 Weight: 5.41 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG25979Q1557 Certificate date: 30 January 2026 ...
Platinum
Art Deco Style Platinum 0.81 ct Mozambique Ruby and Diamond Cluster Ring
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 3.29 g Specifications - Metal: Platinum, PT 950 Certificate: AIG American International GemLab no.
Platinum
Art Deco Style Platinum Ceylon Sapphire and Diamond Flowerhead Cluster Ring
Located in Braintree, GB
Dimensions Ring size: UK N / US 6¾ / EU 54 Weight: 3.92 g Specifications - Metal: Platinum, PT 950 Certificate: AIG American International GemLab no.
Platinum
Art Deco Style Platinum 1.51 ct Burmese Ruby and Diamond Plaque Ring
Located in Braintree, GB
Dimensions Ring size: UK O / US 7¼ / EU 55 Weight: 6.22 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26555Q2971 Certificate date: 11 February 2026...
Platinum
Art Deco Style Platinum Sapphire and Diamond Pierced Navette Ring
Located in Braintree, GB
Dimensions Ring size: UK N½ / US 7 / EU 54.5 Weight: 6.08 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26577Q6308 Certificate date: 11 February 20...
Platinum
Art Deco Style Platinum 1.45 ct Sapphire and Diamond Navette Ring
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 4.41 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26637Q1031 Certificate date: 12 February 20...
Platinum
Art Deco Style Platinum Sapphire and Diamond Oval Plaque Ring, Champagne Accents
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 4.79 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26430Q9271 Certificate date: 6 February 202...
Platinum
Art Deco Style Platinum Sapphire and Diamond Wheel Target Ring
Located in Braintree, GB
Dimensions Ring size: UK O½ / US 7½ / EU 55.75 Weight: 3.69 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26217Q8185 Certificate date: 2 February 2...
Platinum
$33,590Sale Price|32% Off
Cartier Platinum Destinée Diamond Ring 2.31ct 5.43g
By Cartier
Located in SYDNEY, NSW
Reference CRZJ423551, Article ZJ423551, Serial 60PPPH. Metal: 950 Platinum Carat: 2.31ct Colour: G Clarity: VVS1 Cut: Cushion & Round Brilliant Cut Weight: 5.43 grams Engravings...
Diamond, Platinum
Tiffany & Co. .22 Carat Round Diamond Platinum Etoile Band Ring
By Tiffany & Co.
Located in Stamford, CT
The scattered diamond arrangement creates a refined yet contemporary look, making it ideal as a wedding band, anniversary ring, or everyday statement piece. 10 round brilliant cut d...
Diamond, Platinum
8.19 Carat Pear Morganite Diamond Platinum Dangle Earrings
Located in Stamford, CT
The pairing of pear-shaped morganite gemstones and dazzling diamonds set in platinum creates a timeless allure that is both mesmerizing and refined. 2 pear soft pink Morganite, app...
Diamond, Morganite, Platinum
Peter Suchy GIA Certified 2.62 Carat Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Designed and crafted in the Peter Suchy Workshop. 1 round blue Sapphire, approx. total weight 2.62cts, GIA certificate #5182476143 4 Princess cut Diamonds, approx. total weight ....
Diamond, Sapphire, Platinum
Tiffany & Co. 4.15 Carat Diamond Platinum Dangle Chandelier Earrings
By Tiffany & Co.
Located in Stamford, CT
With their intricate design and superior craftsmanship, this is Tiffany & Co. at its best. 400 Ideal full cut diamonds F, VVS-VS 4.15cts Platinum 28.2 grams Stamped: PT 950 Hallmar...
Diamond, Platinum
Peter Suchy 2.59 Carat Purple Sapphire Diamond Dangle Platinum Earrings
By Peter Suchy
Located in Stamford, CT
These spectacular detailed and intricate earrings were designed and crafted in the Peter Suchy Workshop. 1 cushion pinkish purple Sapphire, approx. total weight 1.32cts, SI, GIA ce...
Diamond, Sapphire, Purple Sapphire, Platinum
Tiffany & Co. Elsa Peretti Round Diamond Cross Pendant Necklace in Platinum
By Elsa Peretti for Tiffany & Co.
Located in Scottsdale, AZ
Retails for $4450 Metal: Platinum Natural Diamonds: .20 carat total weight Length: 16” Cross width: 13.5 mm Cross length: 16.5 mm Weight: 6.7 grams Stamped: Tiffany & Co. PT 950...
Diamond, Platinum
10.98 Carat Round Diamond X Link Platinum Necklace
Located in Stamford, CT
Indulge in the allure of this masterpiece that effortlessly blends classic design with contemporary allure, a must-have for those with a penchant for fine jewelry. 196 round diamo...
Diamond, Platinum
Peter Suchy 74.23 Carat Cabochon Aqua Diamond Platinum Dangle Earrings
By Peter Suchy
Located in Stamford, CT
Truly magnificent, they radiate elegance and opulence with every movement. 2 round cabochon blue Aquamarines, approx. total weight 74.23cts, I1 18 single cut Diamonds, approx. total...
Aquamarine, Diamond, Platinum
10.35 Carat Rectangle Aquamarine Ruby Diamond Platinum Engagement Ring
Located in Stamford, CT
Meticulously cut in a rectangular shape, the aqua shines with a mesmerizing blue hue which is complimented by the vibrant rubies. 1 cut corner rectangle blue aqua, approx. 10.35cts...
Aquamarine, Diamond, Ruby, Platinum
$16,041Sale Price|20% Off
T. Foster & Co Aquamarine and Diamond Cluster Platinum Engagement Ring
By T. Foster & Co.
Located in London, GB
Signed 'T.FOSTER & CO' and stamped PT 950 to the inside of the band. Dimensions: 2.9 x 2.9 x 1cm The ring is currently a UK finger size I (USA size 4.5) but this can be resized for...
Diamond, Aquamarine, Platinum
Tiffany & Co. 'Together' Double Milgrain Polished Platinum Wedding Band Ring
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 8 Metal: Platinum Weight: 14.3 grams Band Width: 6.3 mm Outer diameter: 22.16 mm Stamped: Tiffany & Co. PT 950 Estate Condition: Very good, professionally cleaned and...
Platinum
Tiffany & Co. Three Stone Circlet Diamond Halo Ring in Platinum Size 4.75
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 4.75 Weight: 5.9 grams Natural Diamonds: .55 ctw Width: 7.98 mm Band: 2.59 mm Stamped: Tiffany & Co. PT 950
Diamond, Platinum
Tiffany & Co. Platinum Diamond Stud Earrings Asscher Center Art Deco Style
By Tiffany & Co.
Located in Boca Raton, FL
Enhance your elegance with these stunning Tiffany & Co. stud earrings. Crafted from platinum PT 950, these earrings feature a central Asscher-cut white diamond, surrounded by a halo ...
Diamond, Platinum
Vintage Diamond Solitaire Engagement Ring with a Tiffany & Co. Platinum Setting
By Tiffany & Co.
Located in Philadelphia, PA
Marked to the shank for Tiffany & Co. / PT 950. Simply a wonderful ring! Date: 20th Century Overall Condition: It is in overall good, as-pictured, used estate condition.
Diamond, Platinum
.33 Carat Round Diamond Woven Platinum Wedding Band Ring
Located in Stamford, CT
The woven motif symbolizes unity and everlasting connection, making this ring a meaningful and stylish choice for a wedding band or anniversary ring. 30 round full cut Diamonds, app...
Diamond, Platinum
Art Deco Style Platinum Diamond and Calibre Sapphire Star Cluster Ring
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 3.88 g Specifications - Metal: Platinum, PT 950 Certificate: AIG American International GemLab no.
Platinum
Art Deco Style Platinum 0.90 ct Mozambique Ruby and Diamond Quatrefoil Ring
Located in Braintree, GB
Dimensions Ring size: UK N / US 6¾ / EU 54 Weight: 4.68 g Specifications - Metal: Platinum, PT 950 Certificate: AIG American International GemLab no.
Platinum
Floral diamond pendant in platinum PT950 1.60ct
Located in Boca Raton, FL
This pendant is large and will definitly get lots of compliments! Metal: PT 950 (platinum) Center Diamond carat: 1.00ct Center Diamond shape: Round Brilliant Center Diamond clarit...
Diamond, Platinum
$3,988Sale Price / set|20% Off
TIFFANY & CO Three Stones Earrings Studs Solid Platinum With 6 Round Diamonds
By Tiffany & Co.
Located in Miami, FL
Hallmarks: Stamped with the maker's mark, the mark for the assay of the platinum and signed, "T&CO TIFFANY & CO. PT .950 PAT. NO. 6557220". Collateral: This pair of Tiffany & Co. ea...
Diamond, White Diamond, Platinum
Peter Suchy 1.88 Carat Diamond Platinum Three-Stone Engagement Ring
By Peter Suchy
Located in Stamford, CT
Desgined and crafted in the Peter Suchy Workshop. 1 emerald step cut I VS diamond, Approximate 1.53 carat GIA certified #5181771185 2 bullet step cut H VS diamonds, Approximate 0....
Diamond, Platinum
GZ Platinum Faceted Bead Mesh Necklace
Located in Stamford, CT
Whether paired with an evening gown or a casual outfit, its versatile charm never goes unnoticed. 950 Platinum 42.2 grams Tested: 950 Platinum Stamped: Pt 950 Hallmark: GZ Length: 1...
Platinum
Glittering Panda Bear Brooch With Black & White Diamonds Set in Platinum
Located in Palm Beach, FL
The clip on the reverse side is stamped PT 950, designating platinum. Gross weight 12.65 grams.
Diamond, Platinum
Mondera GIA Certified 1.59 Carat Red Spinel Diamond Platinum Engagement Ring
Located in Stamford, CT
The GIA has certified the Spinel as natural, no treatment. 1 oval purplish red Spinel, approx. total weight 1.59cts, SI, 7.45 x 6.32 x 4.75mm, GIA certificate #1186118061 46 round ...
Diamond, Spinel, Platinum
Platinum & Diamond Belle Epoque Style Drop Earrings
Located in Brisbane City, QLD
We could imagine these being worn by a bride on her wedding day, or being a really gorgeous wedding anniversary gift for a fine jewel lover. Marked - 'Pt 950' for platinum to earri...
Diamond, Platinum
Movado Tiffany & Co Platinum Square Hooded Lugs Wristwatch
By Movado
Located in Stamford, CT
Platinum 34.2 grams Width without crown: 25mm Width with crown: 26.5mm Diameter: 24.9mm Band width at case: 16mm Case thickness: 8mm Markings: Person Engraving - 1953 (Available upon...
Platinum
Tiffany & Co. Etoile Tahitian Pearl Diamond Earrings Platinum
By Tiffany & Co.
Located in London, GB
The round brilliant cut diamonds total 0.50 carat approximately, assessed as G colour VS1 clarity The earrings are finished with stem and butterfly fittings, Signed to reverse of ...
Diamond, Pearl, Platinum
A Fabulous Platinum (PT950) Bird Cage Diamond Pendant with Necklace
By TSE
Located in Macau, MO
A "Bird cage" pendant set with diamonds weighing 0.17 carats, mounted in PT 950 platinum . Bird cage culture is a part of traditional Chinese culture which can be dated back to more ...
Diamond, Platinum
GIA Certified 3.10 Carat Emerald Diamond Platinum Pendant Necklace
Located in Stamford, CT
The GIA has certified the emeralds natural, simple F1 enhancement which is low level clarity enhancement. 4 carved green Emeralds, approx. total weight 3.10cts, F1, GIA certificate...
Diamond, Emerald, Platinum
Peter Suchy 2.06 Carat Pink Octagonal Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
GIA Certificate # 2185686588 2 tapered baguette diamonds G VS Approximate .15 carats 46 round full cut diamonds G VS Approximate .23 carats Size 7.75 and sizable Platinum Tested: P...
Diamond, Pink Sapphire, Sapphire, Platinum
$5,588Sale Price / set|20% Off
Harry Winston GIA Certified Engagement Ring in Platinum with Diamond Box Papers
By Harry Winston
Located in Miami, FL
Hallmarks: Stamped with the maker's mark, the platinum assay mark, the serial numbers and signed, "©HARRY WINSTON 235635 PT .950". Collateral: It is accompanied by the designer's do...
Diamond, White Diamond, Platinum
Natalie K GIA 2.07 Carat Oval Sapphire Diamond Halo Platinum Engagement Ring
By Natalie K
Located in Stamford, CT
The sapphire is certified by the GIA as natural, No heat. 1 oval Royal Blue Sapphire, approx. total weight 2.07cts, no heat, GIA certificate #5171101371 2 trapezoid diamonds, appro...
Diamond, Sapphire, Blue Sapphire, Platinum
Tiffany & Co. Legacy Round .71 Carat Diamond Halo Engagement Ring in Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 6 Metal: Platinum Natural Diamonds: .85 ctw Diamond cut: Round Brilliant Diamond color: G-H Diamond clarity: VS1-VS2 Weight: 3.6 grams Main Ornament Diameter: 8.25 mm Band...
Diamond, Platinum
Tiffany & Co. Round Diamond Engagement Ring with Channel Set Diamond Shank
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 5.75 Weight: 6.7 grams Height: 6.33 mm Natural Diamonds: 1.12 ctw Diamond color: F-G Diamond clarity: VVS2-VS1 Main Stone diameter: 5.75 mm Band Width: 3.42 mm - 2.30 mm ...
Diamond, Platinum
Peter Suchy GIA Certified 1.51 Carat Diamond Sapphire Engagement Platinum Ring
By Peter Suchy
Located in Stamford, CT
The ring was designed and crafted with the Art Deco era being the inspiration, by the Peter Suchy Workshop. 1 round brilliant cut diamond, approx. total weight 1.51cts, I, SI2, 7.39...
Diamond, Sapphire, Platinum
GIA 2.41 Carat Green Blue Oval Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
GIA certificate# 2145516324 2 tapered baguette diamonds, approx. total weight .44cts, F, VS Size 7 and sizable Platinum 6.5 grams Stamped: Pt 950 Width at top: 7.8mm Height at top: 7...
Blue Sapphire, Diamond, Sapphire, Green Sapphire, Platinum
Tiffany & Co. 1972 Vintage Platinum Sapphire Diamond Cluster Ring
By Tiffany & Co.
Located in Bradenton, FL
Marked Tiffany & Co. PT 950 on inner band, identifying both the maker and the 950 platinum fineness.
Diamond, Sapphire, Platinum
Peter Suchy GIA 1.02 Round Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
GIA certificate #5171989270 2 round diamonds full cut .32ct f vs2 8 round diamonds full cut .08cts f vs2 Size 6.25 and sizable Platinum 950 Platinum Tested: Platinum Stamped: Pt 950 ...
Diamond, Sapphire, Platinum
Vintage 1990s Tiffany & Co Platinum Tiffany Together Milgraine Edge Wedding Band
By Tiffany & Co.
Located in Brighton, GB
Crafted from platinum, this wedding band is stamped with the Tiffany & Co logo and "PT 950" to indicate its high-quality material. This ring is suitable for both men & women.
Platinum
Tiffany & Co. 1.50 Carat Diamond Platinum Garland Bracelet
By Tiffany & Co.
Located in Stamford, CT
Crafted with the finest quality in mind that Tiffany & Co. is known for. 61 round brilliant cut diamonds, F VS approx. 1.05cts Platinum Stamped: PT 950 Hallmark: Tiffany + Co....
Diamond, Platinum
Spark GIA 1.36 Carat Pink Oval Sapphire Diamond Platinum Engagement Ring
By Spark Creations
Located in Stamford, CT
The oval shape of the gemstone enhances its brilliance, while the surrounding diamonds bring a radiant sparkle to the design. 1 oval purplish pink Sapphire, approx. total weight 1....
Diamond, Sapphire, Pink Sapphire, Platinum
EGL Certified 1.48 Carat Art Deco Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
Exquisite and timeless, this ring exudes a sense of refinement and opulence with the intricate Art Deco design giving it a vintage charm. 1 antique cushion (French cut) diamond wit...
Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum
Tiffany & Co. Aquamarine Diamond Platinum Stud Earrings
By Tiffany & Co.
Located in Simpsonville, SC
Dimensions: 0.63" L x 0.5" W Weight: 7.4 g Hallmarks: T&Co., PT 950 All our measurements are approximate.
Aquamarine, Diamond, Platinum
0.86 Carat E, VS1 Round Diamond Engagement Ring, Three-Stone Diamond Ring GIA
Located in Honolulu, HI
The total diamond weight on the ring is 1.24 carats. The ring is stamped "PT 950" "0.86", Hallmarked "ME" & Numbered "02715" on the inside.
Diamond, Platinum
Tiffany & Co. Tiffany Forever Semi Eternity Round Diamond Band Ring in Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Ring size: 4.5 Metal: Platinum Weight: 3.1 grams Natural Diamond: .27 ctw Diamond cut: Round Brilliant Diamond color: F-G Diamond clarity: VS1-VS2 Ring outer diameter: 18.80 mm Band...
Diamond, Platinum
Tiffany & Co. Round Brilliant Diamond Cross Pendant 18" Necklace in Platinum
By Tiffany & Co.
Located in Scottsdale, AZ
Metal: Platinum Natural diamonds: .42 ctw Diamond cut: Round brilliant Diamond color: G-H Diamond clarity: VS1-VS2 Pendant width: 13.38 mm Pendant length: 18.45 mm Chain length: 18"...
Diamond, Platinum
Art Deco Inspired Asscher Cut Diamond Ring in Platinum
Located in London, England
Lastly the band is hallmarked Pt, 950 (for platinum).
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.