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Tiffany Co. .99 Carat Diamond Platinum Swing Drop Pendant Necklace
By Tiffany Co.
Located in Stamford, CT
: Platinum Stamped: PT 950 Hallmark: Tiffany & Co
Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, Platinum

Mikimoto Diamond Cats Eye Blue Enamel Platinum and White Gold Band Ring
By Mikimoto
Located in Southampton, PA
: 23.4 grams Width: 15mm Stamped Hallmarks: Mikimoto Pt 950 K18 2.07ct D 1.38ct *Free Shipping within
Category

20th Century Japanese Band Rings

Materials

Diamond, 18k Gold, Platinum

Schlumberger Tiffany&Co. 18k Platinum Pearl Diamond Clip On Earrings
By Tiffany Co.
Located in Bernardsville, NJ
Brand: Tiffany & Co. Designer: Schlumberger Material: 18k & Platinum (stamped 750 and PT 950
Category

20th Century Stud Earrings

Materials

Diamond, Pearl, 18k Gold, Platinum

Cartier Ballerine Round Brilliant Diamond 0.36 tcw FVVS1 Engagement Ring COA GIA
By Cartier
Located in San Diego, CA
: Cartier Pt 950 46 © 0.33 XF9*** Includes: Cartier COA - GIA Diamond Certificate EST. Retail: ~ $5,500
Category

2010s Engagement Rings

Materials

Diamond, Platinum

Natural Pearl and Diamond Ring ca. 1950
Located in Lucerne, CH
: EU 57 / 8 US Maker's mark: illegible Assay mark: PT 950
Category

Mid-20th Century Unknown Contemporary Cocktail Rings

Materials

Diamond, Natural Pearl, Platinum

Peter Suchy 1.12 Carat Blue Sapphire Platinum Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
, VS approx. 1.12cts Platinum Size: 6.5 and sizable Stamped: PT 950 5.2 grams Width at top: 3.1mm
Category

21st Century and Contemporary Band Rings

Materials

Sapphire, Blue Sapphire, Platinum

Peter Suchy .10 Carat Diamond Platinum Star Pendant Necklace
By Peter Suchy
Located in Stamford, CT
Peter Suchy workshop. 5 round brilliant cut diamonds, F-G VS approx. .10cts Platinum Stamped: PT 950
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Cartier 0.49 Carat Diamond Engagement Ring
By Cartier
Located in New York, NY
diamond accents. The ring is signed Cartier and stamped Pt 950 48 and is numbered. It is currently size 4
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Paloma Picasso Platinum Baroque Keshi Pearl Pendant 16" Necklace
By Tiffany Co.
Located in Montclair, NJ
Width: 12.8mm (0.50") (approx.) Thickness: 8.3mm Hallmark: Tiffany & co. - Paloma Picasso - PT 950
Category

21st Century and Contemporary Pendant Necklaces

Materials

Pearl, Platinum

Tiffany Co. Elsa Peretti 22mm Platinum Open Heart Pendant, 7 Diamond 16 Neck
Located in Laguna Beach, CA
. Stamped Tiffany & Co and signed Elsa Peretti PT 950 SPAIN. It weighs 10.5 grams. Chain length measures 16
Category

20th Century Pendant Necklaces

Materials

Diamond, Platinum

GIA 1.99 Carat Old Mine Brilliant Cut Diamond Bezel Stud Platinum Earrings
Located in Stamford, CT
Platinum 950 Tested: Platinum Stamped: Pt 950 2.7 grams Top to bottom: 6.71mm or .27 inch Width: 6.55mm or
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Platinum

2.08ct H VVS1 Square Emerald Cut Diamond Platinum Engagement Ring
By Tobi Gem Setting
Located in London, GB
platinum shank. Stamped PT 950. UK finger size 'L''. HRD Certificate no: 13012896001
Category

2010s English Modern Engagement Rings

Materials

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
Category

Mid-20th Century Engagement Rings

Materials

Diamond, Sapphire, Green Sapphire, Platinum

Platinum Diamond Ring w Tanzanite 4.00ct, .50tdw
Located in Laguna Beach, CA
Ladies tanazanite and diamond ring with platinum setting. Stamped Pt 950 and weighs 6.9 grams. The
Category

20th Century Cocktail Rings

Materials

Diamond, Tanzanite, Platinum

Tiffany Co. Etoile Solid Platinum Diamond 4mm Eternity Band Ring Sz 6
By Tiffany Co.
Located in Montclair, NJ
of ring - north to south) Ring Height 2.2mm rise off the finger Signature: T&CO. Pt 950 Condition
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

2.30 Carat Diamond Platinum Swirl Earrings
Located in Stamford, CT
Stamped: PT 950 15.8 grams Top to bottom: 22mm or .85 Inch Width: 22mm or .85 Inch Depth or thickness
Category

Early 20th Century More Earrings

Materials

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.
Category

21st Century and Contemporary Necklace Enhancers

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum, Gold, Yellow Gold

Peter Suchy 4.95 Carat Diamond Platinum Eternity Wedding Band Ring
By Peter Suchy
Located in Stamford, CT
: Platinum Stamped: PT 950 8.7 grams Width at top: 4.6mm Height at top: 3.5mm Width at bottom: 4.6mm
Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Platinum

EGL Certified .40 Carat Semi Bezel Channel Set Diamond Engagement Ring
Located in Stamford, CT
sizable Platinum Stamped: FD PT 950 6.1 grams Width at top: 6.8mm Height at top: 5.9mm Width at bottom
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 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
Category

21st Century and Contemporary Dangle Earrings

Materials

Diamond, Ruby, Platinum

IGI Certified Irina Ferry Violet Spinel Diamond Platinum Designer Ring
Located in Westport, CT
CT in total, near colorless and SI1–SI2 clarity. Mounted in platinum, stamped “Irina Ferry PT 950
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Spinel, Platinum

IGI Certified Paolo Costagli Pink Tourmaline Sapphire Diamond Engagement Ring
By Paolo Costagli
Located in Westport, CT
, near colorless color, SI1–SI2 clarity. Mounted in platinum and 18K yellow gold, stamped “750 PT 950
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Tourmaline, Gold, 18k Gold, Platinum

Coral Cabochon Diamond ring
Located in New York, US
- Stamped pt 950 for platinum. - Coral Cabochon measuring approximately 19.75 x 19.83mm ( depth non
Category

Vintage 1960s Cocktail Rings

Materials

Coral, Diamond, 18k Gold

Tiffany Co. Diamond Key Pendant Necklace
By Tiffany Co.
Located in London, GB
& Co.’ ‘PT 950' Box: Plain Gift Box
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Cartier Destinee Cushion 1.15 cts H VS1 Halo Engagement Ring in Platinum
By Cartier
Located in San Diego, CA
. number: N4746100 Certification: GIA 2215029799 Metal: Pt 950 Platinum Size: 6.25 sizable Measurements
Category

2010s Engagement Rings

Materials

Diamond, Platinum

Platinum Vintage Diamond Fringed Knot Cluster Earrings, App. 1.88 TCW
Located in Fairfield, CT
have no posts, and omega style backs. Marks: PT 950 Dimensions: 1" long x 9/16" wide Weight: 9.7 gross
Category

20th Century Unknown Retro Lever-Back Earrings

Materials

Diamond, White Diamond, Platinum

Tiffany Co Etoile 18K Gold Platinum Diamond Earrings
By Tiffany Co.
Located in Flushing, NY
Tiffany & Co Etoile 18K Gold & Platinum Diamond Earrings Marked: TIFFANY & Co 750 PT 950
Category

20th Century Drop Earrings

Materials

Diamond, Gold, Platinum, 18k Gold

Platinum Cabochon Sapphire and Diamond Dome Ring
Located in Great Neck Plaza, NY
conversation piece. Signed and stamped "PT 950" on the inner shank. Featured in ISSUE Magazine in November 2025.
Category

Vintage 1960s Dome Rings

Materials

Diamond, Sapphire, Platinum

Tiffany Co. 1.71 Carat F IF Diamond Platinum Ring
By Tiffany Co.
Located in New York, NY
0.72ct F VS The setting is PT/950. The ring is a size 6, not sizable The ring weighs 8.4 grams. The ring
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

Fancy Yellow Cushion Diamond 3-Row 1.88 Carat Orianne Designer Platinum Ring
Located in San Diego, CA
Carats Total Color & Clarity: H - I color, SI1 - SI2 clarity Hallmark: Orianne PT 950, D 0.51ct
Category

2010s Cocktail Rings

Materials

Diamond, Platinum

EGL Certified 3.35 Carat Old European Diamond Platinum Stud Earrings
Located in Stamford, CT
European diamond, I-J SI approx. 1.72cts Platinum Stamped: PT 950 3.5 grams Top to bottom: 7.9mm or .31
Category

21st Century and Contemporary Stud Earrings

Materials

Diamond, Platinum

Peter Suchy EGL Certified 1.60 Carat Round Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
# 055190370D Platinum Stamped: PT 950 2.7 grams Top to bottom: 3.8mm or .54 Inches Width: 7.6mm or .30 Inches
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Tiffany Co 0.42ct Lucida Diamond (G/IF) Solitaire 950 Platinum Engagement Ring
By Tiffany Co.
Located in MELBOURNE, AU
& weight of diamond: "D.0.42ct" It's stamped PT 950 & hallmarked Total item's weight: 4.00gr. Ring's
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

Art Deco Ring Platinum Hand Made Natural Green Sapphire 1.08 carat and Diamond
Located in MADRID, ES
size: 7 3/4 US/ EU 16.5 /56.50/18 mm Contrasts and Mark: Pt 950
Category

21st Century and Contemporary Spanish Contemporary Cluster Rings

Materials

Diamond, Green Sapphire, Platinum

1.65 Carat Diamond Platinum Art Deco Pendant Necklace
Located in Stamford, CT
Platinum Stamped: PT 950 10.0 grams Top to bottom: 34.4mm or 1 1/3 Inch Width: 17.7mm or 11/16 Inch Depth
Category

Mid-20th Century Pendant Necklaces

Materials

Diamond, Platinum

Tiffany Co Channel Set Platinum Diamond Engagement Ring Round 1.03 ct F VVS2
By Tiffany Co.
Located in San Diego, CA
Diamond Certificate: 31137748/N09240084 Metal: Platinum PT 950 Size: 6 - sizable TCW: 1.36 tcw Main
Category

2010s Bridal Rings

Materials

Diamond, Platinum

2.02 Carat Green Tourmaline Diamond Platinum Dangle Earrings
Located in Stamford, CT
, approx. .03ct each, total weight .18cts, G-H, VS Platinum Tested: Platinum Stamped: Pt 950 Top to bottom
Category

Early 20th Century Dangle Earrings

Materials

Diamond, Tourmaline, Platinum

Van Cleef Arpels Diamond Cluster Platinum Earrings
By Van Cleef Arpels
Located in Greenwich, CT
Cleef & Arpels, PT 950 (Platinum) NY. 55368. A delicate balance between design and the simplicity of the
Category

21st Century and Contemporary French Artist Clip-on Earrings

Materials

Diamond, White Diamond, Platinum

Peter Suchy 1.88 Carat Diamond Platinum Three-Stone Engagement Ring
By Peter Suchy
Located in Stamford, CT
step cut H VS diamonds, Approximate 0.35 carats Size: 6.5 and sizable Platinum Stamped: PT 950 5.6
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

0.40ctw Diamond Twisted Eternity Band Ring, Platinum, Ring Size 5.75
Located in McLeansville, NC
: "PT 950" *eternity band SKU: R3960 A Couple Of Things to Note: * This is a vintage item and may show
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

Tiffany Co. 18k Yellow Brooch Diamond
By Tiffany Co.
Located in Chicago, IL
" & "PT 950", this brooch comes accompanied by a T&Co Box, ensuring its authenticity and elegance.
Category

Vintage 1980s American Brooches

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

Peter Suchy GIA 1.53 Carat Diamond Halo Octagonal Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Stamped: PT 950 Hallmark: T 8.2 grams Width at top: 12.33mm Height at top: 7.06mm Width at Bottom: 2.25mm
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Tiffany Co. Platinum and Diamond Engagement Ring
Located in Washington Depot, CT
Diamond clarity: VS1 Ring Size: 5.5 Weight: 2.3 dwt. / 3.6 gr. Hallmark: TIFFANY & CO PT 950
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Tiffany Co Novo Platinum Diamond Engagement Ring
Located in Washington Depot, CT
Diamond clarity: VS1 Ring Size: 6 Weight: 2.5 dwt. / 4.0 gr. Hallmark: TIFFANY & CO PT 950
Category

20th Century Engagement Rings

Materials

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
Category

21st Century and Contemporary Pendant Necklaces

Materials

Black Diamond, Diamond, Platinum

GIA .88 Carat Cornflower Blue Sapphire Diamond Halo Platinum Pendant Necklace
Located in Stamford, CT
: pt 950 Chain: 16 inches Chain width: 1mm cable chain Center section width: 8.5mm Top to bottom: 6.7mm
Category

21st Century and Contemporary Pendant Necklaces

Materials

Blue Sapphire, Diamond, Sapphire, Platinum

GIA Certified 1.30 Carat Burma Ruby Diamond Ring in Platinum
Located in Hong Kong, HK
placed to accentuate the ruby's regal presence. These stunning stones are set in a band of PT 950
Category

21st Century and Contemporary Hong Kong Contemporary Cocktail Rings

Materials

Diamond, Ruby, Platinum

GIA Certified 13.78 Carat Yellow Sapphire Diamond Platinum Pendant Necklace
Located in Stamford, CT
Platinum Chain Platinum Stamped: Chan PT 950 8.6 Grams Top to Bottom: 38.0mm or 1 ¾ Inches Width: 13.29mm
Category

Early 20th Century Pendant Necklaces

Materials

Diamond, Sapphire, Yellow Sapphire, Platinum

Tiffany Co Elsa Peretti Diamond Stacked Band Rings, Platinum, Ring Size 5
By Elsa Peretti for Tiffany Co.
Located in McLeansville, NC
: Peretti Tiffany & Co PT 950 A Couple Of Things to Note: * This is a vintage item and may show signs of
Category

21st Century and Contemporary Band Rings

Materials

Diamond, Platinum

Platinum Infinity Set Diamond Pendant Necklace #17782
Located in Washington Depot, CT
8.4mm X 4.1mm Weight: 1.82 dwt/ 2.84 g Hallmark: PT 950 ZEZ Very good condition, professionally
Category

21st Century and Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Kwait Platinum 18K White Gold Marquis Diamond Dangle Earrings #17044
By Kwait
Located in Washington Depot, CT
mm x 7 mm Weight: 2.5 dwt. / 4.0 gr. Stamped: PT 950 KWAIT Very good condition, professionally
Category

21st Century and Contemporary Dangle Earrings

Materials

White Diamond, Platinum

Necklace in 18 Karat Gold, Platinum and Diamonds and 1.5 Carat Yellow Diamond
Located in Paris, FR
Necklace in 18 Carat white Gold, PT 950 Platinum and diamonds holding an Important Yellow Cushion
Category

Early 2000s Unknown Pendant Necklaces

Materials

Diamond, Yellow Diamond, 18k Gold, White Gold, Yellow Gold, Platinum

Vintage Platinum 2.03ct Diamond Solitaire Ring
Located in New York, NY
Hallmark: PT 950 Item #: BR-1664-072925-07
Category

20th Century Solitaire Rings

Materials

Diamond, Platinum

Platinum Pink Kunzite Ring
By Christopher Bilton
Located in 徳島市, JP
really glows! Stamped Pt 950 inside. Recently completed brand new ring. 950 platinum from the UK Made
Category

2010s Japanese Solitaire Rings

Materials

Kunzite, Platinum

Platinum Pink Kunzite Ring
Platinum Pink Kunzite Ring
$1,170 Sale Price
40% Off
Tiffany Co Platinum Diamond Engagement Ring 0.85ct
By Tiffany Co.
Located in SYDNEY, NSW
Cut: Round Brilliant Cut Weight: 5.4 grams Engravings/Markings: Signed TIFFANY & Co PT 950 D 0.85ct
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Birks Platinum GIA Certified 0.72ct H VS2 Sleek Engagement Ring
By Birks
Located in New York, NY
: 8.1 x 5.7 x 5.8mm Ring Size: 5.5 Hallmark: BIRKS PT 950 0.72 BR-1532-030625-20
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Peter Suchy GIA 1.23 Carat Diamond Sapphire Halo Platinum Engagement Ring
By Peter Suchy
Located in Stamford, CT
Size 6.5 and sizable 950 Platinum Tested: Platinum Stamped: Pt 950 Hallmark: T 6.1 grams Width at top
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

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Pt 950 For Sale on 1stDibs

Find the exact pt 950 you’re shopping for in the variety available on 1stDibs. Frequently made of Platinum, 18k Gold and Gold, this item was constructed with great care. As it relates to this specific piece, our collection includes designs that are universally popular, but 4.5 Carat and 5 Carat carat weights, specifically, are sought with frequency. Creating a pt 950 has been a part of the legacy of many jewelers, but those produced by Tiffany Co. and Cartier are consistently popular. A pt 950 can make for a versatile accessory, but a selection from our variety of 12 Diamond versions can add an especially stylish touch. Today, if you’re looking for a brilliant cut version of this piece and are unable to find the perfect match, our selection also includes oval cut and pear cut alternatives. Finding a pt 950 for sale for women should be easy, but there are 14 pieces available to browse for unisex as well as men, too.

How Much is a Pt 950?

Prices for a pt 950 can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $780 and can go as high as $24,860, while this accessory, on average, fetches $1,213.

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 ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.