PT950 Tiffany & Co 0.72 CT Center Engagement Ring
By Tiffany & Co.
Located in Los Angeles, CA
An elegant Tiffany & Co ring in platinum 950. Set with 1.04 carats of diamonds. Size/length: 6. Comes with paperwork/box. Guaranteed authentic; sourced through an established dia...
Platinum
Wedding band in PT950 with Round diamodns
By M&V Vanguard Jewelry
Located in New York, NY
Wedding band in PT950 Total Carat Weight 1.50ct F/G color & VS Clarity Eternity band style Size:6 (not sizable)
Diamond, Platinum
Vintage Van Cleef & Arpels Platinum Pt950 Bezel Diamond Wedding Band Ring Sz 9.5
By Van Cleef & Arpels
Located in Addison, TX
Details Designer: Van Cleef & Arpels Metal: Platinum Purity: Pt950 Hallmarks: VCA Pt950 61 JA826383 Ring Size: 9.5 (EU Size 61) Total Weight: 8.6 Grams Band Width: 3.9mm Center Stone...
Diamond
Anniversary Band in PT950 with Blue Sapphires
By M&V Vanguard Jewelry
Located in New York, NY
Anniversary band in Platinum Emerald Cut Blue sapphires, 14 stones Total Carat Weight: 14.70ct, each stone aprx:1.05ct Size:6.25
Blue Sapphire, Platinum
Bvlgari Ring. Bulgari FEDI Platinum plain Band Pt950 Comfort Fit Genuine Bvlgari
By Bulgari
Located in Port Charlotte, FL
Authentic Bulgari FEDI Platinum Band. Bvlgari Comfort Fit Size 5 2.75mm wide 4.0 grams
Gold, 18k Gold, White Gold
PT950 Tiffany & Co 1/3 CT Diamond Engagement Ring
By Tiffany & Co.
Located in Los Angeles, CA
An elegant Tiffany & Co ring in platinum 950. Set with a 0.33 carat diamond, I color, VVS2 clarity, triple-excellent cut. Guaranteed authentic; sourced through an established dia...
Platinum
Tiffany & Co Diamond Earrings & Necklace set in PT950
By Tiffany & Co.
Located in Lucerne, CH
Makers Marks: © Tiffany & Co / © T & Co Assay Marks: PT950
Diamond, Platinum
PT950 Tiffany & Co Harmony 0.20 CT Diamond Solitaire Engagement Ring
By Tiffany & Co.
Located in Los Angeles, CA
An elegant Tiffany & Co Harmony ring in platinum 950. Set with a 0.20 carat diamond, E color, VS1 clarity. Size/length: 5.75. Comes with paperwork. Guaranteed authentic; sourced ...
Platinum
$6,749Sale Price|25% Off
Orloff of Denmark - PT950 - Vibrant Fuschia Sapphire Diamond Ring
Located in Hua Hin, TH
Certified by Lotus Gemology and AIG, this piece reflects Orloff of Denmark’s precision and artistry in platinum craftsmanship. Ring Size: 6.0 US Ring Weight: 6.1 grams Hallmarks: Or...
Diamond, Sapphire, Purple Sapphire, Platinum
Tiffany & Co. PT950 Circlet Three-Stone Diamond Drop Pendant Necklace .55ctw
By Tiffany & Co.
Located in Plantation, FL
Total diamond weight approximately .55ctw, all white, bright stones with excellent Tiffany calibration and setting. Metal is stamped PT950 on the pendant back and the piece hangs fro...
Diamond, Platinum
Tiffany 0.38 Carat Solitaire Diamond Ring PT950 with Channel Set Diamonds
By Tiffany & Co.
Located in Kobe, Hyogo
Item: Tiffany The Tiffany Setting Engagement Ring with a Channel Set Diamond Band Stones: Diamond / 0.38ct (center stone) with 14 diamonds Color: G Clarity:VS2 Polish: Very Goold Sy...
Diamond, Platinum
$6,765Sale Price|44% Off
'Kilimanjaro' - A 2.05 Carat Intense Pink, Mahenge Spinel, PT950 Sculpture Ring
Located in Hua Hin, TH
Orloff of Denmark; Reigning from depths of Tanzania. This intense Mahenge Spinel gives out a zealous shine fit for a royal. Forged in 95% Pure Platinum, this fine sculpture ring is e...
Spinel, Platinum
VCA Vendome Solitaire 0.51ct D-VVS2 Diamond Ring in Pt950 – US4
By Van Cleef & Arpels
Located in Tokyo, JP
■26871127 ■Brand: Van Cleef & Arpels ■Name: Vendome Solitaire Diamond Ring ■Material: 1P diamond (0.51ct D-VVS2-VG), 950 Platinum ■ Accessories: ・Van Cleef & Arpels Box, ・Case, ・VCA ...
Diamond, Platinum
GIA Certified 1.75 Carat Natural Cushion Cut Diamond Hidden Halo Ring Pt950/Ru
By Rock N Gold Creations
Located in San Diego, CA
The setting is crafted in Pt950/Ru (950 platinum-ruthenium), a premium platinum alloy selected for its strength, durability, and naturally bright white appearance.
Diamond, Platinum
Gia Certified Tennis Bracelet with Emerald Cut with 0.60 Ct Each Stone in PT950
By M&V Vanguard Jewelry
Located in New York, NY
GIA Certified Tennis bracelet with emerald cut with 0.60ct each stone in PT950 TCW:25.20 Each stone is GIA Certified: 0.60ct D VS2 GIA#3395571015 0.60ct E VS2 GIA#6425237984 0.60ct ...
Diamond, Platinum
Cartier Platinum Love Ring
By Cartier
Located in Boca Raton, FL
Cartier Platinum Love Ring Designer: Cartier Material: Platinum (Pt 950) Size: Cartier Size 49 (approximately US size 4.75) Ring Measurements: Approximately 18mm × 18mm × 3.5mm Tota...
Platinum
Tiffany & Co. Platinum Band Ring
By Tiffany & Co.
Located in Philadelphia, PA
Marks: Marked to the shank for Tiffany & Co. ©/ PT950. Fineness: Marked PT950 for platinum. Ring Size: ca. 5 Measurements: Diameter: ca. 18 mm Height: ca. 2 mm Weight: ca. 2...
Platinum
Diamond Key Amulet Pendant in Platinum on a Wheat Platinum Chain
Located in New York, NY
Details Provenance: Unknown Hallmarks: 950 Pt Metal: Platinum Stones: 55 round ideal-cut natural round diamonds, estimated weight 0.7 carats Height:1.5 inch Setting: Bezel and bright...
Diamond, Platinum
Vintage Tiffany & Co. Platinum Wedding Band Ring
By Tiffany & Co.
Located in Philadelphia, PA
Marks: Marked Tiffany & Co / PT 950 to the interior of the ring. Fineness: Marked PT950 for Platinum.
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
Platinum 0.80tcw Princess Cut Diamond Ring
Located in New York, NY
Weight: 5.0 Grams Stone: Centerstone 0.50ct H VS1 Princess Cut Diamond Stone: 0.80ctw Diamond Measurements: 22 x 19.54 x 8.95mm Size: 3.5 Hallmark: PT950 Metal: Platinum 950 Item #:...
Diamond, Platinum
$32,000Sale Price|20% Off
Tiffany & Co. Platinum Diamond Bracelet
By Tiffany & Co.
Located in Chicago, IL
Length: 7 inches – perfect for a comfortable, graceful fit Width: 13 mm – substantial presence on the wrist Weight: 49 grams – substantial platinum luxury Material: Solid Platinum...
Diamond, White Diamond, Platinum
Vintage Tiffany & Co. 950 Platinum & Diamond Screwback Stud Earrings
By Tiffany & Co.
Located in Philadelphia, PA
Marks: Fully marked to each screwback for T&CO. / PT 950 and to the posts. Fineness: Marked PT950 for .950 fineness platinum.
Diamond, Platinum
Platinum 950 Princess Cut Diamond Cluster Band Ring
Located in Laguna Beach, CA
A refined platinum diamond band ring, stamped PT 950 and weighing 6.6 grams.
Diamond, Platinum
Cartier Pave Diamond Platinum Wide Hoop Earrings
By Cartier
Located in New York City, NY
Dimensions: 0.88" L x 0.5" W Weight: 14g Hallmarks: Cartier, PT950, reference numbers, OR, French platinum and gold assay marks.
Diamond, Platinum
Platinum, Sapphire, and Diamond Ring
By Hamilton Jewelers
Located in Princeton, NJ
A platinum (PT950), sapphire, and diamond ring centering a cushion cut sapphire of 3.22 carats, this center stone featuring 4 claw prongs and accented by numerous bezel set round bri...
Diamond, Sapphire, Platinum
Platinum and Diamond Drop Necklace
Located in Princeton, NJ
An important platinum (PT950) and natural diamond drop necklace featuring approximately 30 carats of baguette and marquise shaped diamonds and a center stone of pear shape weighing a...
Diamond, Platinum
Platinum GIA Certified 2.99 Carat Diamond Solitaire Necklace
Located in Laguna Beach, CA
A striking platinum diamond solitaire necklace, stamped PT950 Italy and weighing 16.7 grams.
Diamond, Platinum
Tiffany Together Milgrain Band Ring in Platinum
By Tiffany & Co.
Located in San Diego, CA
Together Milgrain Band Ring Style: Band Ref. number: 60001759 Metal: Platinum PT950 Size: 9.25 Measurements: 3 mm Hallmark: ©TIFFANY&CO.
Platinum
2.30 Carat Diamond Platinum Swirl Earrings
Located in Stamford, CT
Circa 1930 to 1940 circular swirl diamond earrings. 14 transitional round cut diamonds set in textured and hand detailed platinum settings. Large sized platinum safety backs. 12 tra...
Diamond, Platinum
Tiffany & Co. Platinum Paloma Picasso Diamond Loving Hearts
By Paloma Picasso for Tiffany & Co.
Located in New York, NY
& Paloma Picasso, signed T & Co. PT 950 Paloma Picasso • Metal: Platinum • Diamonds: 16 round brilliants, 0.12ct. t.w • Pendant Measurements: Approx. 1/2" long × 3/8" wide • ...
Diamond, Platinum
Kwiat 4 Carat Natural Diamond Platinum Tennis Bracelet
By Kwiat
Located in Chicago, IL
Each diamond is expertly set in fine platinum (Pt950), a testament to Kwiat's renowned heritage of precision and quality.
Diamond, Platinum
Platinum and Diamond Spray Brooch
Located in Princeton, NJ
A highly era-representative platinum (PT950) and multi-cut diamond brooch of spray motif.
Diamond, Platinum
Platinum. Ruby, and Diamond Bracelet
By Hamilton Jewelers
Located in Princeton, NJ
A platinum (PT950), ruby, and diamond bracelet of floral design, with round and emerald cut rubies weighing a total of 10.12 carats, and diamonds weighing a total of approximately 1....
Diamond, Ruby, Platinum
Tiffany & Co. Platinum Diamond Wedding Band 0.33ct 5.1g
By Tiffany & Co.
Located in SYDNEY, NSW
Set with 9 round brilliant cut diamonds with a total combined weight of 0.27ct. Metal: Platinum PT950 Carat: 0.27ct Colour: N/A Clarity: N/A Cut: Round Brilliant Cut Weight: 4.58 gr...
Diamond, Platinum
Tiffany Platinum Together Milgrain Band Ring 6 mm
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co Together Milgrain Band Ring Style: Band Metal: Platinum PT950 Size / Measurements: 9 - 6 mm width Hallmark: TIFFANY&CO.
Platinum
Tiffany & Co. Diamond Wishbone Platinum Pendant Necklace 16"
By Tiffany & Co.
Located in Boca Raton, FL
Collection/Style: Diamond Wishbone Pendant Necklace Material: Platinum (PT950) Hallmarks: Tiffany & Co. PT950 Gemstones: Natural brilliant-cut diamonds approximately 0.22ct total...
Diamond, Platinum
Cartier Mimi Diamond Platinum Hoop Earrings
By Cartier
Located in Simpsonville, SC
Condition - Excellent Dimensions: 0.5 " diameter, 0.15" thick Weight: 5.3 g Hallmarks: Cartier PT950, reference number, French platinum assay mark, maker's mark All our measurement...
White Diamond, Platinum
Tiffany & Co. Enchant Diamond Platinum Heart Pendant Necklace 16"
By Tiffany & Co.
Located in Boca Raton, FL
Collection: Enchant Style: Diamond Heart Pendant Necklace Material: Platinum (Pt950) Gemstones: Natural diamonds, approximately 0.25ctw Pendant Measurements: Approximately 16.3 mm lo...
Diamond, Platinum
$1,995Sale Price|48% Off
Tiffany & Co. Platinum Diamond Engagement Ring 0.18ct 3.6g
By Tiffany & Co.
Located in SYDNEY, NSW
The ring features a slim 2mm band, weighs 3.6 grams, and is sized N. Metal: Platinum PT950 Carat: 0.18ct Colour: D Clarity: VVS2 Cut: Round Brilliant Cut Weight: 3.6 grams Engravin...
Diamond, Platinum
Tiffany & Co. 5.8mm Platinum 950 Wedding Band Ring Size 9.5
By Tiffany & Co.
Located in Boca Raton, FL
Style: Wedding Band Material: Platinum Metal Purity: PT950 Hallmarks: 1999 Tiffany & Co.
Platinum
Estate Tiffany & Co. Platinum Soleste Pink Tourmaline Ring
By Tiffany & Co.
Located in Houston, TX
"Soleste" ring featuring a 3.00 carat round-cut pink tourmaline and 0.75 total carat weight of round brilliant-cut diamonds accenting the tourmaline with a double halo and a pave sha...
Diamond, Tourmaline, Platinum
Tiffany & Co. Classic Wedding Band Ring Platinum
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co Style: Classic Wedding Band Ring Width: 3 MM Metal: Platinum PT950 Size: 5 - sizable Hallmark: ©TIFFANY&CO.PT950 Includes: T&C Pouch Retail Value: $1,150
Platinum
0.77 Carat Diamond Platinum Eternity Ring
Located in Stamford, CT
Diamond eternity ring. 31 round brilliant cut diamonds in a platinum, common prong eternity setting. 31 round brilliant cut Diamonds, approx. total weight .77cts, H, VS – SI, 1.9m...
Diamond, Platinum
Platinum, Diamond, and Pearl Drop Necklace
By Hamilton Jewelers
Located in Princeton, NJ
A platinum (PT950) necklace designed as a strand of round brilliant diamonds bordered on either side by Keshi pearls, the necklace splitting into two ribbon motifs at the front, each...
Diamond, Pearl, Platinum
Harry Winston 15 round Diamond Loop Platinum Necklace Medium
By Harry Winston
Located in Guangzhou, CN
Key Features of the Necklace Design: The pendant features a "loop" or open teardrop silhouette, meticulously set with round brilliant-cut diamonds. Material: Platinum (Pt950). Inspi...
Platinum
Tiffany & Co. Vintage Diamond Seagull Brooch, Platinum
By Tiffany & Co.
Located in Chicago, IL
Small Model Stamp: TIFFANY&CO PT950 Metal: platinum Measurements: 1 5/8 inches x 5/8 inch Gross weight: 6.00 grams
Diamond, Platinum
Tiffany & Co. Paper Flowers Diamond Platinum Ring Size 6
By Tiffany & Co.
Located in Boca Raton, FL
Pt950 Italy This authentic Tiffany & Co. Paper Flowers ring features a sculptural floral motif centered with a sparkling diamond and crafted in polished platinum.
Diamond, Platinum
Tiffany & Co. Diamond Enamel Platinum Mini Heart Charm Pendant
By Tiffany & Co.
Located in Boca Raton, FL
Pt950 This authentic Tiffany & Co. mini heart charm pendant features a graceful platinum heart design accented with sparkling diamonds and refined enamel detailing.
Diamond, Platinum, Enamel
2.80 Carat Diamond Platinum Eternity Band Ring
Located in Stamford, CT
1950's Handmade custom diamond eternity band ring. 20 round brilliant cut diamonds set in a platinum setting. 20 round brilliant cut diamonds, F-G VS approx. 2.80cts Size 6.5 and s...
Diamond, Platinum
Harry Winston Diamond Bow Brooch In Platinum.
By Harry Winston
Located in New York, NY
Inscribed: Winston, Platinum, Pt950, OR. There are 104 round brilliant cut diamonds with total weight of approximately 18.00ct., and 194 baguette cut diamonds with total weight of ap...
Diamond, 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 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 Mozambique Ruby and Diamond Navette Ring
Located in Braintree, GB
Dimensions Ring size: UK N / US 6¾ / EU 54 Weight: 4.27 g Specifications - Metal: Platinum, PT 950 Certificate: AIG American International GemLab no.
Platinum
Art Deco Style Platinum Sapphire and Diamond Flowerhead Target Ring
Located in Braintree, GB
Dimensions Ring size: UK O / US 7¼ / EU 55 Weight: 3.44 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26586Q8788 Certificate date: 11 February 2026...
Platinum
Art Deco Style Platinum Burmese Ruby and Diamond Navette Ring
Located in Braintree, GB
Dimensions Ring size: UK O / US 7¼ / EU 55 Weight: 6.24 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26285Q3323 Certificate date: 4 February 2026 ...
Platinum
Art Deco Style Platinum Sapphire and Diamond Hexagonal Star Ring
Located in Braintree, GB
Dimensions Ring size: UK M / US 6¼ / EU 52.5 Weight: 4.48 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26004Q6651 Certificate date: 30 January 202...
Platinum
Art Deco Style Platinum Sapphire and Diamond Domed Bombe Ring
Located in Braintree, GB
Dimensions Ring size: UK N / US 6¾ / EU 54 Weight: 6.66 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26026Q3668 Certificate date: 30 January 2026 ...
Platinum
Art Deco Style Platinum Sapphire and Diamond Scalloped Cluster Ring
Located in Braintree, GB
Dimensions Ring size: UK L½ / US 6 / EU 52 Weight: 4.59 g Specifications - Metal: Platinum, PT 950 Certificate: Geneve Gemslab no. GGLG26434Q6376 Certificate date: 6 February 2026 ...
Platinum
Bulgari Platinum Diamond Ring Old Mine Cut Center Monture Ring
By Bulgari
Located in Fairfield, CT
The interior is clearly signed BULGARI and bears a 950 PT platinum hallmark, as visible in the photographs.
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.