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Natural Blue Sapphire and Diamond Platinum Engagement Ring
Located in Stamford, CT
Tested: Platinum
Stamped: PT 950
Width at top: 8.24mm
Height at top: 6.88mm
Width at Bottom: 2.59mm
Category
Vintage 1960s Bridal Rings
Materials
Blue Sapphire, Diamond, Platinum
.98 Carat Two Diamond Platinum Pendant Necklace
Located in Stamford, CT
diamonds H SI, approx. .3ct
Platinum
Stamped: PT950
3.3 grams
Top to bottom: 21.67mm or 13/16 Inch
Width
Category
Early 20th Century Pendant Necklaces
Materials
Diamond, Platinum
Platinum GIA Certified Diamond Halo Ring by Ritani
By Ritani
Located in Webster, NY
Center Diamond Clarity: SI1
Certification: GIA - 14605217
Metal: Platinum
Stamped: "Pt950" "Ritani
Category
21st Century and Contemporary Engagement Rings
Materials
Diamond, Platinum
Tiffany
Co. Schlumberger 16-Stone Diamond and Platinum Ring 1.14 Carat
By Tiffany
Co.
Located in San Diego, CA
Tiffany & Co.
Style: Schlumberger Sixteen Stone Ring
Metal: Platinum PT 950
Size: 7
Total Carat
Category
2010s American Band Rings
Materials
Diamond, Platinum
Vintage 0.90 Carat Diamond Platinum Tennis Player Charm
Located in Philadelphia, PA
clarity
Completed by jump ring bale
Numbered with maker's mark
Stamped 950 Pt for platinum
Measures: 1
Category
Late 20th Century Contemporary Charm Bracelets
Materials
Diamond, White Diamond, Platinum
Tiffany
Co. Platinum Knife-Edge Wedding Band Ring
By Tiffany
Co.
Located in New York, NY
Brand: Tiffany & Co.
Style: Knife-Edge
Hallmarks: Tiffany & Co. PT950
Metal: Platinum
Finger Size: 6
Category
2010s American Contemporary Band Rings
Materials
Platinum
Vintage Tasaki Diamond Floral Pendant in Platinum
By TASAKI
Located in London, England
pendant is signed and hallmarked Tasaki logo, PT950 (for platinum), 0.31 (for diamond weight). Lastly, a
Category
21st Century and Contemporary Modern Pendant Necklaces
Materials
Diamond, Platinum
Tiffany
Co. Circlet Collection Platinum Diamond Engagement Ring
By Tiffany
Co.
Located in Baltimore, MD
: Platinum PT950
Weight: 3.87 grams
Diamonds: Approx. .65 CTW F-G VS
Top of ring is 8.5mm
Size: 7.5 (US)
Category
2010s American Modern Engagement Rings
Materials
Diamond, Platinum
Tiffany
Co. Diamond Platinum Etoile Band Ring
By Tiffany
Co.
Located in Philadelphia, PA
diamonds weighing approximately 0.22 carat; F/G color with VS clarity
Signed T & Co. and stamped PT950 for
Category
Early 2000s Contemporary Band Rings
Materials
Diamond, White Diamond, Platinum
Tiffany
Co. GIA Certified Diamond Platinum Engagement Ring
By Tiffany
Co.
Located in Beverly Hills, CA
Classic Tiffany & Co. six prong modern diamond platinum engagement ring. Featuring a 0.99 carat GIA
Category
2010s American Modern Engagement Rings
Materials
Diamond, Platinum
Tiffany
Co. Platinum Knife-Edge Wedding Band Ring
By Tiffany
Co.
Located in New York, NY
Brand: Tiffany & Co.
Style: Knife-Edge
Hallmarks: Tiffany & Co. PT950
Metal: Platinum
Finger Size: 5.5
Category
21st Century and Contemporary American Contemporary Band Rings
Materials
Platinum
Tiffany
Co. Platinum Dragonfly Pendant on a Chain
By Tiffany
Co.
Located in New York, NY
TIFFAY & CO. PLATINUM DRAGONFLY PENDANT AND CHAIN
A charming and collectable Tiffany & Co
Category
2010s American Modern Pendant Necklaces
Materials
Diamond, Platinum
1990s Classic Tiffany
Co. Platinum Unisex Wedding Band Ring
By Tiffany
Co.
Located in Philadelphia, PA
Completed by a high polish
Fully signed 1990 Tiffany & Co.
Stamped PT950 for platinum
Ring Size: 5 1/2
Category
1990s Contemporary Wedding Rings
Materials
Platinum
Contemporary 1.51 Carat Sapphire Diamond Platinum Engagement Ring
Located in Philadelphia, PA
total approximately 0.35 carat with G/H color and VS clarity
With maker's mark and stamped PT950 for
Category
21st Century and Contemporary Engagement Rings
Materials
Diamond, Sapphire, Platinum
1940s 9.39 Carat Natural Pear Aqua Diamond Platinum Dangle Earrings
Located in Stamford, CT
.38cts, G, VS2
950 Platinum
Platinum
Tested: 950 Platinum
Stamped: Pt 950
8.5 grams
Top to bottom
Category
Vintage 1940s Dangle Earrings
Materials
Aquamarine, Diamond, Platinum
Tiffany
Co. Diamond Platinum Etoile Band Ring
By Tiffany
Co.
Located in Philadelphia, PA
diamonds weighing approximately 0.22 carat; F/G color with VS clarity
Signed T & Co. and stamped PT950 for
Category
Early 2000s Contemporary Band Rings
Materials
Diamond, White Diamond, Platinum
Antique 1.13Ct Diamond and Platinum Necklace Circa 1920
Located in Jesmond, Newcastle Upon Tyne
impressive antique diamond necklace is hallmarked to the ring loop of the clasp with the platinum mark (PT950
Category
Vintage 1920s Drop Necklaces
Materials
Diamond, Platinum
Cartier Trinity Ceramic Diamond Gold Platinum Band Ring
By Cartier
Located in Southampton, PA
Gorgeous Cartier Diamond Three-Band Trinity Ring in Platinum, Ceramic, and 18k White Gold.
With
Category
21st Century and Contemporary French Band Rings
Materials
Diamond, 18k Gold, Platinum
3.60 Carat Diamond and Platinum Trilogy Ring
Located in Jesmond, Newcastle Upon Tyne
shank with the platinum fineness marks (PT950 and 950), the maker's mark 'XM' and the Birmingham Assay
Category
Antique Early 1900s British Three-Stone Rings
Materials
Diamond, Platinum
Tiffany
Co Platinum Lucida Cut Diamond Ring 0.75ct
By Tiffany
Co.
Located in SYDNEY, NSW
4.27 grams, Ring Size J.
Metal: Platinum PT950
Carat: 0.75ct
Colour: I
Clarity: VS2
Cut: Square Mixed
Category
21st Century and Contemporary Engagement Rings
Materials
Diamond, Platinum
Amethyst 1.50 CTW Diamond Platinum Cluster Pendant Necklace
Located in Philadelphia, PA
stamped PT950 for platinum
Circa: 2000s
Length: 17 1/2 inches
Pendant measures: 5/8 x 11/16 inch
Total
Category
21st Century and Contemporary Drop Necklaces
Materials
Amethyst, Diamond, Platinum
Hammerman Brothers Diamond and Sapphire Set Platinum Earrings
By Hammerman Brothers
Located in Litchfield, CT
diamonds and .90 carats total weight sapphires
HALLMARKS: HB for Hammerman Brothers, PT and 950 for
Category
Vintage 1960s American Lever-Back Earrings
Materials
White Diamond, Blue Sapphire, Platinum
Hammerman Brothers Asscher Cut Diamond 3 Stone Platinum Engagement Ring
Located in Stamford, CT
.80cts, F, VVS
950 Platinum
Tested: Platinum
Stamped: Pt 950
Hallmark: HB
8.9 grams
Width at top: 7.26mm
Category
Early 2000s Engagement Rings
Materials
Diamond, Platinum
Tiffany
Co. 1.60 Carat Diamond Platinum Link Earrings
By Tiffany
Co.
Located in Philadelphia, PA
omega backs
Fully signed Tiffany & Co. and stamped PT950 for Platinum
Measures: approx. 5/8 x 3/8 inch
Category
Late 20th Century Contemporary Clip-on Earrings
Materials
Diamond, Platinum
Tiffany
Co. 1.60 Carat Diamond Platinum Link Earrings
By Tiffany
Co.
Located in Philadelphia, PA
omega backs
Fully signed Tiffany & Co. and stamped PT950 for Platinum
Measures: approx. 5/8 x 3/8 inch
Category
Late 20th Century Contemporary Clip-on Earrings
Materials
Diamond, Platinum
1940s 3.35 Carat Diamond and Platinum Cocktail Watch
Located in Jesmond, Newcastle Upon Tyne
caseback hallmarked with the platinum mark (pt-950) the maker's icon (Cervin Watch/Matterhorn) and the four
Category
Vintage 1940s Unknown Wrist Watches
Materials
Diamond, Platinum
.33 Carat Diamond Platinum Art Deco Pendant Neckalce
Located in Stamford, CT
, Approximate .15ct
6 single cut H-I VS diamonds, Approximate .18cts
Chain: 18 Inches
Platinum
Stamped: PT950
Category
Early 20th Century Pendant Necklaces
Materials
Diamond, Platinum
Tiffany
Co Ruby Diamond Gold Platinum Wedding Band Ring
By Tiffany
Co.
Located in Stamford, CT
, VS
Platinum & 18k yellow gold
Tested: 18k & Platinum
Stamped: PT 950/750
Hallmark: Tiffany & Co
Category
Early 2000s Band Rings
Materials
Diamond, Ruby, 18k Gold, Platinum, Yellow Gold
Tiffany
Co. Diamond Platinum Channel Band Ring
By Tiffany
Co.
Located in Philadelphia, PA
Diamonds are G/H in color with VS clarity
Completed by grooved shoulders and sleek shank
Stamped PT950
Category
Late 20th Century Contemporary Band Rings
Materials
Diamond, White Diamond, Platinum
Tiffany
Co. Platinum Soleste Half Circle Round Diamond Band Ring
By Tiffany
Co.
Located in New York, NY
Tiffany & Co. Pt950
Metal: Platinum
Finger Size: 7.5 ( Can be sized )
Weight: 3.1 grams
Band Width: 2 mm
Category
21st Century and Contemporary Contemporary Wedding Rings
Materials
Diamond, Platinum
Tiffany
Co. Classic Platinum Millegrain Wedding Band Stacking Ring
By Tiffany
Co.
Located in Philadelphia, PA
Tiffany & Co.
Stamped PT950 for platinum
Ring Size: 6 1/2
Top measures: 2.9 mm and sits 1.7 mm high
Category
Late 20th Century Contemporary Wedding Rings
Materials
Platinum
Tiffany
Co. Platinum 6 Prong Solitaire Setting Semi Mount Ring
By Tiffany
Co.
Located in San Diego, CA
Tiffany & Co Solitaire Semi-Mount
Style: Six - Prong Solitaire Setting
Metal: Platinum PT950
Category
2010s American Wedding Rings
Materials
Platinum
Tiffany
Co. Platinum Knife Edge Wedding Band Stack Ring
By Tiffany
Co.
Located in Philadelphia, PA
Band style ring designed with knife edge detailing
Featuring high polished finish
Stamped PT950
Category
Early 2000s Contemporary Wedding Rings
Materials
Platinum
Cartier 1.25 Carat Sapphire Diamond Platinum Unisex Cross Pendant Charm
By Cartier
Located in Philadelphia, PA
numbered
Stamped PT 950 for platinum
Measures: 7/16 x 7/8 (including bale) inch
Total weight: 2.8
Category
20th Century Modernist Charm Bracelets
Materials
Diamond, Sapphire, Platinum
Platinum 2 1/5 Cttw Baguette Diamond Channel Link Bracelet
Located in New York, NY
.
• Metal: PT950 White Platinum
• Average Gram Weight: 17.91
• Diamond 1 Clarity: SI1-SI2, Color: H-I
Category
21st Century and Contemporary Indian Modern Link Bracelets
Materials
Diamond, White Diamond, Platinum
EGL Certified .68 Carat Diamond Platinum Pendant Necklace
Located in Stamford, CT
EGL Certificate # 400145984D
1 baguette diamond, H-I VS approx. .10cts
Platinum
Stamped: PT950
2.9
Category
Early 20th Century Pendant Necklaces
Materials
Diamond, Platinum
GIA Certified Diamond Solitaire Engagement Ring Made in Platinum
Located in Webster, NY
12199179
Metal: Platinum
Stamped: "PT950"
Ring Size: 6 - sizable
Category
21st Century and Contemporary Engagement Rings
Materials
Diamond, Platinum
Tiffany
Co. Platinum Diamond Etoile Circle Donut Pendant Necklace
By Tiffany
Co.
Located in Southampton, PA
Weight: 0.18ctw
Stamped Hallmarks: Tiffany & Co Platinum PT950
*Free Shipping within the United States
Category
21st Century and Contemporary Pendant Necklaces
Materials
Diamond, Platinum
GIA Certified 1.37 Carat Emerald Diamond Platinum Pendant Necklace
Located in Stamford, CT
SI diamond, Approximate .20ct
Platinum
Stamped: PT 950
6.1 grams
Top to bottom: 21.7mm or 13/16
Category
Early 20th Century Pendant Necklaces
Materials
Diamond, Emerald, Platinum
Tiffany
Co. Lucida Diamond Platinum Anniversary Stacking Band Ring
By Tiffany
Co.
Located in Philadelphia, PA
Channel set with highly polished edges
Fully signed Tiffany & Co. Lucida and numbered
Stamped PT950 for
Category
Early 2000s Contemporary Band Rings
Materials
Diamond, Platinum
1.10 Carat Diamond and Platinum Trilogy Ring
Located in Jesmond, Newcastle Upon Tyne
fineness marks (PT950 and 950), the maker's mark 'XM' and the Birmingham Assay Office hallmark (anchor
Category
Late 20th Century British Three-Stone Rings
Materials
Diamond, Platinum
Tiffany
Co .54 Carat Diamond Platinum Open Heart Pendant Necklace
By Tiffany
Co.
Located in Stamford, CT
Platinum
Stamped: PT 950
Hallmark: Tiffany & Co
4.6 grams
Pendant: .61 inches across and .54 inches top
Category
21st Century and Contemporary Pendant Necklaces
Materials
Diamond, Platinum
Tiffany
Co. Platinum Knife-Edge Wedding Band Ring Size 7
By Tiffany
Co.
Located in New York, NY
Hallmarks: Tiffany & Co. PT950
Metal: Platinum
Finger Size: 7
Weight : 2.9 grams
Width: 2mm
Retails $700
Category
21st Century and Contemporary Band Rings
Materials
Platinum
Contemporary Tiffany
Co. Diamond Platinum Anniversary Band Ring
By Tiffany
Co.
Located in Philadelphia, PA
2000
Fully signed Tiffany & Co. and numbered
Stamped PT950 for platinum
Ring Size: 7 1/2 & sizable
Category
Early 2000s Unknown Contemporary Band Rings
Materials
White Diamond, Platinum
Estate Tiffany
Co. Classic Platinum Wedding Band Signed Jewelry
By Tiffany
Co.
Located in Torrance, CA
inches), rising 2mm from the finger.
Metal & Hallmark: 950 platinum. The ring is hallmarked "PT950" for
Category
Mid-20th Century Unknown Modern Band Rings
Materials
Platinum
1950s 2.76 Carat Diamond and Platinum Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
hallmarked to the interior of the shank with the platinum mark (PT950).
This impressive vintage cluster
Category
Vintage 1950s Cluster Rings
Materials
Diamond, Platinum
Contemporary .75 Carat Diamond Platinum Anniversary Band Ring
Located in Philadelphia, PA
approximately .75 carat total with G/H color and SI clarity
With maker's mark
Stamped PT950 for platinum
Category
Early 2000s Contemporary Band Rings
Materials
Diamond, White Diamond, Platinum
Tiffany
Co. Elsa Peretti Curve Band Diamond Platinum Ring
By Tiffany
Co.
Located in San Diego, CA
Tiffany & Co.
Style: Elsa Peretti Curve Band Ring
Sku Number: 12060424
Metal: Platinum PT950
Category
Early 2000s American Band Rings
Materials
Diamond, Platinum
1.56 Carat Diamond and Platinum Twist Ring
Located in Jesmond, Newcastle Upon Tyne
the interior of the shank with the platinum fineness marks (PT950 and 950), the maker's mark (XM) and
Category
Late 20th Century British Contemporary Engagement Rings
Materials
Diamond, Platinum
.80 Carat Diamond Platinum Bar Set Diamond Band Ring
Located in Stamford, CT
Diamonds, F-G, VS approx. total weight .80cts
Size 6.5 and sizable
950 Platinum
Tested: Platinum
Stamped
Category
21st Century and Contemporary Band Rings
Materials
Diamond, Platinum
Peter Suchy 1.30 Carat Diamond Platinum Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
½ and sizable
Platinum
Stamped: PT950
Hallmark:
6.9 grams
Width at top: 4.2mm
Height at top: 2.8mm
Category
21st Century and Contemporary Wedding Rings
Materials
Diamond, Platinum
Modern 2.00 Carat Diamond Platinum Eternity Band Ring
Located in Philadelphia, PA
total approximately 2.00 carats with G/H color and VS clarity
With maker's mark and stamped PT950 for
Category
Early 2000s Contemporary Band Rings
Materials
Diamond, White Diamond, Platinum
Vintage 0.50 Carat Diamond Platinum Channel Wedding Band Ring
Located in Philadelphia, PA
in color with VS to SI clarity
Completed by grooved shoulders
Stamped PT950 for platinum
With maker's
Category
21st Century and Contemporary Wedding Rings
Materials
Diamond, Platinum
Elsa Peretti Tiffany
Co. Onyx Platinum Touchstone Pendant Necklace
By Elsa Peretti for Tiffany
Co.
Located in Philadelphia, PA
Tiffany & Co. Peretti and stamped PT950 for platinum
From the vintage Touchstone collection, circa 1980s
Category
Vintage 1980s Contemporary Pendant Necklaces
Materials
Onyx, Platinum
Elsa Peretti Tiffany
Co. Diamond Platinum Stacking Band Ring
By Elsa Peretti for Tiffany
Co.
Located in Philadelphia, PA
white
Polished platinum band
Fully signed Peretti Tiffany & Co.
Stamped PT950 for platinum
Ring Size
Category
Mid-20th Century Contemporary Band Rings
Materials
Diamond, Platinum
1950s 1.46 Carat Diamond and Platinum Drop Earrings
Located in Jesmond, Newcastle Upon Tyne
fastening.
The posts are hallmarked with the platinum fineness marks (PT950).
This impressive pair of
Category
Vintage 1950s Unknown Drop Earrings
Materials
Diamond, Platinum
Vintage Tiffany
Co. Platinum Knife-Edge Wedding Band Ring
By Tiffany
Co.
Located in New York, NY
: Knife-Edge
Hallmarks: Tiffany & Co. PT950
Metal: Platinum
Finger Size: 5.5 (Can be resized)
Weight: 2.5
Category
21st Century and Contemporary Contemporary Engagement Rings
Materials
Platinum
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Pt950 Platinum For Sale on 1stDibs
On 1stDibs, you can find the most appropriate piece of pt950 platinum for your needs in our varied inventory. 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. Find an antique version now, or shop for 1597 vintage or 2187 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for an item from our selection of pt950 platinum 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 choice in our collection of pt950 platinum over the years, but those made by Tiffany
Co., Cartier and Jean Schlumberger for Tiffany
Co. are often thought to be among the most beautiful. A round cut version of this piece has appeal, but there are also brilliant cut and cushion cut versions for sale. If you’re browsing our inventory for an object in our assortment of pt950 platinum, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.
How Much is a Pt950 Platinum?
Prices for a piece of pt950 platinum can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $98 and can go as high as $3,200,000, while this accessory, on average, fetches $5,720.
The Legacy of Diamond in Jewelry Design
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.
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