1.30 Carat Emerald Diamond Platinum Diamond by The Yard Necklace
Located in Stamford, CT
, approx. .80cts Platinum Stamped: PT950 8.7 grams Chain: 44 Inches
Mid-20th Century Multi-Strand Necklaces
Diamond, Emerald, Platinum
1.30 Carat Emerald Diamond Platinum Diamond by The Yard Necklace
Located in Stamford, CT
, approx. .80cts Platinum Stamped: PT950 8.7 grams Chain: 44 Inches
Diamond, Emerald, Platinum
Vintage 3.57 Carat Madagascan Sapphire 2.37 Carat Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
the interior of the shank with the platinum fineness mark (PT950) and the lozenge shaped makers mark
Diamond, Sapphire, Platinum
Peter Suchy EGL Certified 1.35 Carat Diamond Platinum Dangle Earrings
By Peter Suchy
Located in Stamford, CT
, Approximate .30cts Platinum Stamped: PT950 2.4 grams Top to Bottom: 13.13mm or ½ Inch Width: 4.4mm or 3/16
Diamond, Platinum
Tiffany & Co. Elsa Peretti .60 Carat Diamond Platinum By The Yard Necklace
By Elsa Peretti for Tiffany & Co.
Located in Stamford, CT
. is renowned for. 6 brilliant cut round diamonds, G VS approx. .60cts Platinum Stamped: PT950
Diamond, Platinum
Tiffany & Co. Platinum .21 ct D VVS1 Round Diamond Solitaire Engagement Ring
By Tiffany & Co.
Located in New York, NY
: Tiffany Classic Metal: Platinum (Pt950) Finger Size: 4.5 (resizable) Weight: 3 grams Hallmarks: © TIFFANY
Diamond, Platinum
TIFFANY & CO Round Brilliant Diamond 0.75 cts I VS1 Platinum Engagement Ring
By Tiffany & Co.
Located in San Diego, CA
/18/23758954 Metal: Platinum Pt950 Size / Measurements: 5 Sizable TCW: 0.75 cts Main Diamond
Diamond, Platinum
Tiffany & Co. Round Brilliant Diamond Wedding Band Ring Platinum 2.5 MM
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. Style: Half Circle Diamond Wedding Band Sku Number: 16183334 Metal: Platinum PT950
Diamond, Platinum
Tiffany & Co. Round Brilliant Diamond 0.80 cts H VS1 Engagement Ring in Platinum
By Tiffany & Co.
Located in San Diego, CA
: Platinum PT950 Size: 6.5 sizable Band Width: 1.9 MM Main Stone: Round Brilliant Diamonds 0.80 cts H color
Diamond, Platinum
Tiffany & Co TRUE Platinum Diamond Engagement Ring 2.66 CTS G VS1 Retail $79.5K
By Tiffany & Co.
Located in San Diego, CA
: Platinum PT950 Size: 6 - sizable Total Carat Weight: 2.66 cts Diamond Shape: Cut Corner Square Mixed Cut
Diamond, Platinum
Tiffany & Co Lucida Platinum Diamond Engagement Ring 0.46 tc E VVS1
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. Style: Lucida Serial Number: 21924156 / H05040579 Metal: Platinum PT950 Size
Diamond, Platinum
Vintage 1.66 Carat Sapphire and 1.90 Carat Diamond Platinum Cluster Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 1.66 carat sapphire and 1.90 carat diamond platinum cluster ring
Diamond, Sapphire, Platinum
Peter Suchy GIA Certified 1.60 Carat Star Ruby Diamond Platinum Dangle Earrings
By Peter Suchy
Located in Stamford, CT
Stamped: PT 950 2.8 grams Top to bottom: 13.5mm or .5 Inch Width: 5.7mm or 3/16 Inch Depth or thickness
Diamond, Ruby, Platinum
Tiffany & Co Forever Platinum Diamond Band Ring 3mm Half Circle Shared Prong #2
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. FOREVER Half Circle Diamond Band Ring Style: Half-circle Band Metal: Platinum
Diamond, Platinum
1.10 Carat Diamond Trilogy Ring in Platinum, Birmingham Circa 1980
Located in Jesmond, Newcastle Upon Tyne
fineness marks (PT950 and 950), the maker's mark 'XM' and the Birmingham Assay Office hallmark (anchor
Diamond, Platinum
Tiffany & Co. Round Brilliant 0.25ct I VVS2 Diamond & Platinum Engagement Ring
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. Style: Solitaire Engagement Ring Serial Number: 22401408/H05310098 Metal: Platinum
Diamond, Platinum
Orloff of Denmark Platinum diamond pendant natural 7.12 carat Blue Zircon
Located in Hua Hin, TH
-of-a-kind pendant crafted in solid platinum (PT950), showcasing a rare 7.12 carat emerald-cut
Diamond, Zircon, Blue Zircon, Platinum
$167,200Sale Price|20% Off
GIA Certified 5 Carat Emerald Cut Diamond Three-Stone Platinum Ring
Located in Chicago, IL
sophisticated silhouette that enhances the linear geometry of the emerald cut. Handcrafted in Platinum PT950
Diamond, Platinum
Tiffany & Co. Paloma Picasso X Diamond Necklace in 18K Gold and Platinum
By Paloma Picasso for Tiffany & Co.
Located in University Place, WA
layering. Details: Platinum (PT950) pendant 18K yellow gold chain Round brilliant diamonds, approximately
Diamond, 18k Gold, Yellow Gold, Platinum
AGL Certified 4.11 Carat Green Tourmaline Diamond Halo Platinum Cocktail Ring
Located in Stamford, CT
. total weight 1.00cts, F, VS1 to VS2 Size 6 and sizable Platinum 950 Stamped: PT 900 Tested: Platinum
Diamond, Tourmaline, Platinum
GIA Certified 1.84 Carat Sapphire Diamond Platinum Art Deco Dangle Earrings
Located in Stamford, CT
. .28cts Platinum Stamped: PT 950 6.4 grams Top to bottom: 22.1mm or 7/8 Inch Width: 8.6mm or 1/3 Inch
Diamond, Sapphire, Platinum
Cartier 1895 Round Diamond 0.88 tcw Engagement Ring in Platinum GIA COA Box
By Cartier
Located in San Diego, CA
**** Metal: Platinum PT950 GIA: 2106981161 Size: 6.25 TCW: 0.88 tcw Main Diamond: Round Brilliant
Diamond, Platinum
Peter Suchy GIA Transitional Cut Diamond Sapphire Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
weight .20cts, G, VS Size 6.5 and sizeable 950 Platinum Tested: Platinum Stamped: PT950 6.9 grams Width
Diamond, Sapphire, Platinum
GIA Certified 1.53 Carat Orange Sapphire Diamond Platinum Dangle Earrings
Located in Stamford, CT
approx. .50cts Platinum Stamped: PT950 4.1 grams Top to bottom: 20.3mm or 5/8 Inch Width: 6.5mm or .25
Diamond, Sapphire, Platinum
0.90 Carat H VS1 Diamond Platinum Five-Stone Engagement Ring
Located in London, GB
approximate combined weight of 0.50ct, all mounted in platinum. Stamped PT950. UK finger size 'M 1/2'. IGI
Diamond, Platinum
Tiffany & Co. Diamond Wedding Band Ring Full Circle 2 mm 0.38 tcw Platinum
By Tiffany & Co.
Located in San Diego, CA
Ref. number: 60003383 Metal: Platinum PT950 Size: 4 Measurements: 2 MM TCW: 34 Round Brilliant
Diamond, Platinum
C De Cartier Platinum F VVS2 .30ct Diamond Solitaire Engagement Ring w/ Box
By Cartier
Located in Montclair, NJ
Clarity - 0.30ct (exact) Material: Solid Platinum - Stamped PT950 Weight: 7.1 Grams Ring Size: Stamped
Diamond, Platinum
Tiffany & Co .20 Carat Diamond Black Pearl Platinum Barbell Cufflinks
By Tiffany & Co.
Located in Stamford, CT
diamonds, G VS approx. .20cts 2 gray black pearls, 10.7mm Platinum Stamped: PT950 Hallmark: Tiffany & Co
Diamond, Pearl, Black Pearl, Platinum
New Platinum GIA 1.14ctw Oval Pink Sapphire Diamond Engagement Wedding Ring
Located in Montclair, NJ
: 1.14 (exact) Material: Solid .900+ Platinum - Stamped PT950 Weight: 4.16 Grams Ring Size: 6.5 (Fitted
Diamond, Pink Sapphire, Platinum
20.00 Carat Aqua Diamond Sapphire Platinum Art Deco Pendant Necklace
Located in Stamford, CT
Art Deco handmade platinum pendant with a natural untreated pear shape aqua with rainbows and
Diamond, Sapphire, Platinum
Tiffany & Co. Novo 1.47 Tcw Cushion Diamond Eng Ring Pave Diamond Platinum Band
By Tiffany & Co.
Located in San Diego, CA
Metal: Platinum PT950 Size: 5.5 sizable TCW: 1.47 tcw Main Diamond: Cushion Cut Diamond 1.30 cts
Diamond, Platinum
82.82 Carat Sapphire Diamond Pearl Belle Époque Platinum Dangle Earrings
Located in Stamford, CT
: 13.46mm or .53 inch 21.7 grams Tested: Platinum Stamped: PT 950
Diamond, Natural Pearl, Sapphire, Pearl, Blue Sapphire, Platinum
Natalie K GIA 3.33 Carat Octagonal Purple Sapphire Diamond Platinum Ring
By Natalie K
Located in Stamford, CT
, VS Size 6.75 and sizable Platinum Stamped: Pt 950 NK D 0.38 0.16 Width at top: 8.6mm Height
Diamond, Sapphire, Purple Sapphire, Platinum
Tiffany & Co. Platinum Nesting Full Circle .14 ct Diamond 3mm Narrow Band Ring
By Tiffany & Co.
Located in New York, NY
new. Details Brand: Tiffany & Co. Collection: Tiffany Setting Nesting Band Metal: Platinum (Pt950
Diamond, Platinum
Peter Suchy 1.97 Carat Round Diamond Platinum Eternity Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
SI approx. 1.97cts Size 7.25 and not sizable Platinum Stamped: PT950 5.1 grams Width at top: 3.3mm
Diamond, Platinum
Tiffany & Co. Soleste Fancy Intense Yellow Diamond Earrings in Platinum & 18K
By Tiffany & Co.
Located in Chicago, IL
0.13 carat. Expertly crafted in platinum (PT950) with 18K yellow gold (AU750) surrounding the yellow
Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum
Tiffany & Co. Round Brilliant Diamond and Platinum Wedding Band Ring 2 MM
By Tiffany & Co.
Located in San Diego, CA
: Platinum PT950 Total Carat Weight: 0.22 Cts. Diamond Shape: Round Brilliant Diamond Color & Clarity: G
Diamond, Platinum
AGL Certified Natural 1.41 Carat Green Sapphire Diamond Platinum Engagement Ring
Located in Stamford, CT
.34cts, F, VS Size 6+ and sizable Platinum Stamped: Pt 950 Height at top: 6.7mm Width at top: 7.3mm Width
Diamond, Sapphire, Green Sapphire, Platinum
Spark GIA 1.36 Carat Pink Oval Sapphire Diamond Platinum Engagement Ring
By Spark Creations
Located in Stamford, CT
Width at Bottom: 3.18mm 6.3 grams Tested: Platinum Stamped: Pt 950 Hallmark: Spark D0.49 Please
Diamond, Sapphire, Pink Sapphire, Platinum
Vintage Platinum Gold & Diamond Earrings by Schlumberger for Tiffany & Company
By Jean Schlumberger for Tiffany & Co.
Located in Palm Beach, FL
), Tiffany & Company Schlumberger Stds.(for studios) and PT950 (for platinum). Gross weight is 29.30 grams
Diamond, Gold, 18k Gold, Platinum
Ritani Endless Love Princess Diamond Ring 1.70 Carat H VS1 in Platinum
By Ritani
Located in San Diego, CA
: #1PCZ189 Metal: Platinum PT950 Size: 4.25 - sizable Total Carat Weight: 1.70 TCW Diamond Shape
Diamond, Platinum
Tiffany & Co. 1.14 Carats Diamond Platinum Solitaire Engagement Ring GIA
By Tiffany & Co.
Located in Philadelphia, PA
weight and PT950 for platinum. Circa: 2000s. Ring Size: 6 & sizable. Measures: 7.7 mm wide and sits
Diamond, White Diamond, Platinum
Antique 2.05 Carat Emerald and 1.99 Carat Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
and diamond ring is hallmarked to the interior of the shank with the platinum fineness mark (PT950
Diamond, Emerald, Platinum
Art Deco Style Inspired Platinum Diamond Ballerina Cocktail Ring, 3.84 ct
Located in Great Neck, NY
: Platinum PT950 Center Diamond: 0.91 Carat Round Brilliant Center Diamond Color: G Center Diamond Clarity
Diamond, White Diamond, 18k Gold, White Gold, Platinum
Tiffany & Co. Round Brilliant Diamond 1.05 Cts I VVS2 Engagement Ring Platinum
By Tiffany & Co.
Located in San Diego, CA
Number: 28272634/M03240373 Metal: Platinum PT950 Size: 5.75 - sizable TCW: 1.05 cts Main Diamond
Diamond, Platinum
Peter Suchy 2.06 Carat Pink Octagonal Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
: Pt 950 8.52mm wide at top 6.60mm high at top 3.12 wide at bottom Please Note, we photograph each
Diamond, Pink Sapphire, Sapphire, Platinum
Peter Suchy GIA 2.70 Carat Round Sapphire Diamond Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Peter Suchy swirl design, sapphire and micro pave diamond platinum engagement ring. This exquisite
Diamond, Blue Sapphire, Sapphire, Platinum
Harry Winston 'Classic Bands' 3 mm Unisex Wedding Band Ring in Polished Platinum
By Harry Winston
Located in Scottsdale, AZ
: Classic Bands Metal: Platinum (Pt950) Style: Wedding band Band Width: 3.0 mm Total Weight: 6.900 grams
Platinum
$20,000Sale Price|20% Off
Tiffany & Co. Platinum Channel-Set Diamond Engagement Ring and Band Set
By Tiffany & Co.
Located in Chicago, IL
Tiffany & Co. Platinum Channel-Set Diamond Engagement Ring and Band Set is an exquisite pairing
Diamond, Platinum
Peter Suchy GIA Certified 1.51 Carat Diamond Sapphire Engagement Platinum Ring
By Peter Suchy
Located in Stamford, CT
Stamped: PT 950 Tested: Platinum Width at top: 9.2mm Height at top: 7.4mm Width at Bottom: 2.1mm Please
Diamond, Sapphire, Platinum
Tiffany & Co Platinum Soleste 0.50 Ct. Center Oval Diamond Engagement Ring G VS1
By Tiffany & Co.
Located in New York, NY
: Platinum (Pt950) Hallmarks: © Tiffany & Co., Pt950, D0.50ct, Serial Number Finger Size: 5.75 — free
Diamond, White Diamond, Platinum
Peter Suchy 1.50 Carat Canary Yellow Diamond Gold Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Stamped PT 950. 6.7 grams.
Diamond, Yellow Diamond, 18k Gold, Platinum, Gold, Yellow Gold
Cartier 0.30ct Diamond Engagement Ring Platinum Sz 5 Estate COA GIA Signed
By Cartier
Located in Torrance, CA
inches), rising 5mm from the finger. Metal & Hallmark: Platinum. The ring is hallmarked "Pt 950" for
Diamond, White Diamond, Platinum
Peter Suchy GIA Certified .99 Carat Black Diamond Platinum Halo Pendant Necklace
By Peter Suchy
Located in Stamford, CT
33 round brilliant cut diamonds, F-G VS approx. .16cts Platinum Stamped: PT 950 5 grams Chain: 18
Black Diamond, Diamond, Platinum
Vintage 1.72 Carat Sapphire and 1.80 Carat Diamond, Platinum Earrings Circa 1990
Located in Jesmond, Newcastle Upon Tyne
mark ( 750 ) and the platinum mark (PT950), and both earrings have been independently tested using
Diamond, Sapphire, Yellow Gold, Platinum
Peter Suchy GIA Certified 2.21 Carat Ruby Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
#1196068191 1 round brilliant cut diamond I VS, approx. .28ct Platinum Stamped: PT950 3.9 grams Top to bottom
Diamond, Ruby, Platinum
Peter Suchy GIA Certified 3.18 Carat Sapphire Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Certificate #5781046980 1 old mine cushion cut I-J VS diamond, Approximate .47ct Platinum Stamped: PT950 5.6
Diamond, Sapphire, Platinum
Very Fine Deep Vivid Blue 12.76 ct. Tanzanite and Diamond Platinum Necklace
Located in Aspen, CO
excellent condition, this pendant is suspended on a 17 inch platinum chain, which is marked pt. 950 for
Diamond, Tanzanite, 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.