Rom Germany 18k Yellow Gold & Platinum Byzantine Link Bracelet
Located in Boca Raton, FL
yellow gold and platinum · Hallmark: Pt950 18k Germany ROM · Measurement: approximately 7.5" long x 0.35
18k Gold, Yellow Gold, Platinum
$70,400Sale Price|20% Off
Tiffany & Co. 3.12 Carat Platinum Round Diamond Stud Earrings
By Tiffany & Co.
Located in Chicago, IL
eye-clean appearance. Set in platinum (PT950), the stones are showcased in a timeless and secure
Diamond, White Diamond, Platinum
$264,000Sale Price|20% Off
Harry Winston 4.29 carat Platinum Cushion Diamond Ring
By Harry Winston
Located in Chicago, IL
platinum (PT950) and weighs approximately 4.7 grams. It is currently a size 4.25, fitted with an original
Diamond, White Diamond, Platinum
Platinum, Diamond, Sapphire, and Enamel Chandelier Earrings
Located in Princeton, NJ
An important pair of Oprah Winfrey worn platinum (PT950), diamond, fancy-color sapphire, and enamel
Diamond, Sapphire, Platinum, Enamel
$54,400Sale Price|20% Off
Platinum Pear and Round Diamond Drop Dangle Earrings
Located in Chicago, IL
Platinum 950 (stamped “PT950 0.532ct”) Total Weight: 10.9 grams Center Stones: • 1 Pear Diamond – 1.77
Diamond, White Diamond, Platinum
Omega watch. Omega Platinum and Diamond Vintage Ladies wristwatch
By Omega
Located in Port Charlotte, FL
Stunning watch piece. OMEGA fully mechanical wristwatch. Platinum PT950 Case with multiple diamonds
Diamond, Gold, 18k Gold, White Gold, Platinum
Tiffany & Co. Cobblestone Rose-Cut Diamond Platinum Eternity Band Ring
By Tiffany & Co.
Located in University Place, WA
bands. Details: Platinum (PT950) Rose-cut and round brilliant-cut diamonds Bezel-set with milgrain
Diamond, Platinum
Tiffany & Co. .99 Carat Diamond Platinum Swing Drop Pendant Necklace
By Tiffany & Co.
Located in Stamford, CT
: Platinum Stamped: PT 950 Hallmark: Tiffany & Co
Diamond, Platinum
Kurt Wayne 3.50 Carat Diamond Platinum Swirl Hoop Earrings
By Kurt Wayne
Located in Stamford, CT
cut diamonds, approx. total weight 3.50cts, E – F, VS1 – VS2 Tested: Platinum Stamped: PT 950 Hallmark
Diamond, Platinum
TIffany & Co. Platinum Legacy .98ct Center Cushion Diamond Engagement Ring
By Tiffany & Co.
Located in New York, NY
A Tiffany & Co. Legacy engagement ring crafted in platinum (Pt950), set with a 0.98 carat
Diamond, Platinum
3.75 Carat Pear Shaped Diamond Platinum Dangle Drop Earrings
Located in Stamford, CT
– H, SI1 – SI2, EGL certified# US311639501J Platinum 950 Tested: Platinum Stamped: PT 950 8.1 grams
Diamond, Platinum
Vintage Tiffany & Co. Platinum Knife-Edge Wedding Band Ring Size 5.75
By Tiffany & Co.
Located in New York, NY
: Knife-Edge Hallmarks: Tiffany & Co. PT950 Metal: Platinum Finger Size: 5.75 (Can be resized at any
Platinum
Vintage 3.15Ct Diamond and Platinum Full Eternity Ring Circa 1960
Located in Jesmond, Newcastle Upon Tyne
interior shank with the platinum mark (Pt950). This impressive full eternity is supplied with an IDGL
Diamond, Platinum
Sapphire and Diamond Trilogy Engagement Ring in Platinum
Located in Jesmond, Newcastle Upon Tyne
), the platinum fineness mark (PT950) and the Birmingham Assay office hallmark (anchor). This impressive
Diamond, Sapphire, 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
Diamond, Platinum
Tiffany & Co .98 Carat Diamond Platinum Bubble Key Pendant
By Tiffany & Co.
Located in Stamford, CT
, F VS approx. .98cts Platinum Stamped: PT 950 Italy Hallmark: Tiffany + Co 10.1 grams Top to bottom
Diamond, Platinum
Tiffany & Co .50 Carat Round Diamond Platinum Key Pendant
By Tiffany & Co.
Located in Stamford, CT
optimism. 107 brilliant cut diamonds, F-G VS approx. .50cts Platinum Stamped: PT 950 Hallmark: Tiffany
Diamond, Platinum
Tiffany & Co. Forever Half Circle Diamond Band Platinum 3.5 MM
By Tiffany & Co.
Located in San Diego, CA
Tiffany & Co. Forever Half Circle Diamond Band Style: Band Ref. number: 60004163 Metal: Platinum
Diamond, Platinum
Van Cleef & Arpels Toujours Wedding Band Ring in Platinum
By Van Cleef & Arpels
Located in San Diego, CA
VAN CLEEF & ARPELS Style: TOUJOURS Wedding Band Ring Serial: BSO1423 Metal: Platinum PT950 Width
Platinum
BVLGARI Venezia Platinum Solitaire Ring, 1.15ct Diamond, G-VS2 - US 3.75
By Bulgari
Located in Tokyo, JP
■Model / Reference No.: – ■Material: Platinum (Pt950) ■Main Stone: 1 Brilliant-Cut Diamond (1.15ct, G-VS2
Diamond, Platinum
Tiffany & Co. Platinum .20ct Diamond Solitaire Engagement Ring w/ Original Box
By Tiffany & Co.
Located in Montclair, NJ
White Diamond - 3.70mm - 0.20ct (exact) Material: Solid .900+ Platinum (tested) - Stamped PT950 Weight
Diamond, Platinum
1.14 Carat Diamond and Platinum Trilogy Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
contemporary shank with the platinum fineness marks (PT950 and 950), the maker's mark 'XM' and the Birmingham
Diamond, Platinum
$22,800Sale Price|20% Off
Tiffany & Co. Legacy Cushion Cut Diamond Platinum Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
properly hallmarked with the Tiffany & Co. signature and PT950 for platinum. The center diamond is
Diamond, White Diamond, Platinum
Tiffany & Co. Elsa Peretti Teardrop Pavé Diamond Platinum Bypass Ring
By Elsa Peretti for Tiffany & Co.
Located in University Place, WA
liquid, continuous sparkle. Details: Platinum (PT950) Pavé-set round brilliant diamonds Teardrop bypass
Diamond, Platinum
Tiffany & Co Round Brilliant Diamond 0.38 cts H VS1 Platinum Engagement Ring
By Tiffany & Co.
Located in San Diego, CA
: Platinum PT950 Size / Measurements: 5.75 - sizable Main Diamond: Round Brilliant Diamond 0.38 cts Color
Diamond, Platinum
Vintage Tiffany & Co. Diamond Band Platinum Size 5.5 (51)
By Tiffany & Co.
Located in Beverly Hills, CA
. signature and platinum purity mark (PT950). The narrow band makes it easy to pair with other rings or wear
Diamond, Platinum
Platinum, Diamond, Sapphire, and Moonstone Longchain Station Necklace
Located in Princeton, NJ
A platinum (PT950), diamond, sapphire, and moonstone longchain necklace of 36 inches, the sapphires
Diamond, Moonstone, Sapphire, Platinum
Tiffany & Co. Elsa Peretti Rock Crystal Teardrop Platinum Drop Earrings
By Elsa Peretti for Tiffany & Co.
Located in University Place, WA
Metal: Platinum (PT950) ear wires Drops: Clear rock crystal (quartz) Back type: Pierced, ear wire
Crystal, Rock Crystal, Platinum
Tiffany & Co Harmony Diamond Engagement Ring Round 1.15 cts G VS1 Platinum
By Tiffany & Co.
Located in San Diego, CA
: Platinum PT950 Size: 5.25 - sizable Diamond Shape: Round Brilliant Diamond 1.15 cts Diamond Color
Diamond, Platinum
Tiffany & Co Round Brilliant Diamond Engagement Ring 1.02 cts F VS2 Platinum
By Tiffany & Co.
Located in San Diego, CA
: Platinum PT950 Size: 5.25 - sizable Diamond Shape: Round Brilliant Diamond 1.02 cts Diamond Color
Diamond, Platinum
Tiffany & Co. Platinum and Diamond Wedding Band Ring 2.5 MM
By Tiffany & Co.
Located in San Diego, CA
Metal: Platinum PT950 Total Carat Weight: 0.24 Cts. Diamond Shape: Round Brilliant Diamond Color
Diamond, Platinum
1.41 Carat Princess Cut Diamond and Platinum Stud Earrings
Located in Jesmond, Newcastle Upon Tyne
platinum fineness mark (PT950),'ALPA' and the fastening manufacturers mark 'MECAN'. This impressive pair
Diamond, Platinum
1.24 Carat Diamond and Platinum Three-Stone Engagement Ring
Located in Jesmond, Newcastle Upon Tyne
platinum fineness marks (PT950 and 950), the maker's mark 'XM' and the Birmingham Assay Office hallmark
Diamond, Platinum
Peter Suchy 1.00 Carat Diamond Platinum Pendant Necklace
By Peter Suchy
Located in Stamford, CT
diamond L-M SI, approx. .63ct Platinum Stamped: PT950 1.9 grams Top to bottom: 16.7mm or 5/8 Inch Width
Diamond, Platinum
$52,000Sale Price|20% Off
Tiffany & Co. Soleste Platinum Emerald Cut Diamond Engagement Ring
By Tiffany & Co.
Located in Chicago, IL
total of 0.29 carats. Total diamond weight: 2.25 carats Metal: Platinum (Pt950) Ring size: 5
Diamond, Emerald, Platinum
Vintage Tiffany and Co Ring. Authentic Platinum Band. T&CO Milgrain 3mm
By Tiffany & Co.
Located in Port Charlotte, FL
Rare Tiffany and Co. Platinum Pt950 Milgrain thin design Unisex Condition: Has not been polished
Platinum
Olympus Art Certified, Platinum, MoonStone, Diamond, Unique Art Star Flower Ring
Located in Istanbul, TR
Olympus Art Certified, 950 PT Platinum, 3.12 ct. Diamond Round 23.66 MoonStone Unique Art Piece
Diamond, Moonstone, Platinum
1.30 Carat Diamond Platinum Retro Style Pendant Necklace
Located in Stamford, CT
, approx. .30ct Platinum Stamped: PT950 11.2 grams Top to bottom: 23.67mm or 7/8 Inches Width: 14.6mm or 9
Diamond, Platinum
Tiffany & Co. .88 Carat Diamond Platinum Grace Drop Earrings
By Tiffany & Co.
Located in Stamford, CT
diamonds, G VS approx. .72cts 28 round brilliant cut diamonds, G VS approx. .16cts Platinum Stamped: PT950
Diamond, Platinum
Peter Suchy .53 Carat Round Diamond Platinum Halo Pendant Necklace
By Peter Suchy
Located in Stamford, CT
.39 inch Width: 9.84mm or .38 inch Depth: 3.33mm 2.8 grams Tested: Platinum Stamped: PT 950 Length: 18
Diamond, Platinum
11.62 Carat Banded Agate Diamond Platinum Dangle Earrings
Located in Stamford, CT
approx. .8cts Platinum Stamped: PT950 4.6 grams Top to bottom: 42.2mm or 11/16 inch Width: 5.5mm or .25
Agate, Diamond, Platinum
Platinum and Various Cut Diamond Long Chain Station Necklace
Located in Princeton, NJ
is stamped PT950 for platinum. -Stamped Platinum 950 -Set with 15.34 carats of round brilliant and
Diamond, Platinum
Tiffany & Co. 3.07 ct Round Brilliant Diamond Necklace in Platinum
By Tiffany & Co.
Located in Chicago, IL
. Expertly crafted in platinum (PT950). The pendant and chain are both signed TIFFANY & CO., confirming
Diamond, Platinum
Antique Art Deco 1.75 Carat Diamond and Platinum Drop Pendant
Located in Jesmond, Newcastle Upon Tyne
the maker's mark, the town mark for Sheffield (rose) and the fineness marks for platinum (950 and
Diamond, Platinum
$40,000Sale Price|20% Off
Tiffany & Co. 1.57 Carats Diamond Solitaire Engagement Platinum Ring
By Tiffany & Co.
Located in Chicago, IL
crafted in platinum (Pt950), featuring a stunning 1.57 carat round brilliant cut diamond at the center
Diamond, White Diamond, Platinum
Tiffany & Co Hexagon 1.2 Carat Diamond Platinum Eternity Band Ring
By Tiffany & Co.
Located in Miami, FL
Type: Eternity Band Ring Brand: Tiffany and Co. Collection: Hexagon Metal: Platinum (PT950) Size: 5
Diamond, Platinum
Vintage Platinum Marquise and Round Diamond Tennis Bracelet
Located in Boston, MA
This exquisite vintage bracelet is a true masterpiece of platinum and diamond artistry. Featuring
Diamond, Platinum
Diamond Platinum Engagement Ring .72ct Mined Round Brilliant Brand New
Located in Dearborn, MI
Brand New Diamond Engagement Ring .72ct Round Brilliant Platinum Featuring a .46ct Genuine Round
Diamond, Platinum
Tiffany & Co. Ice Skate Charm Pendant in Platinum with Enamel & Diamonds
By Tiffany & Co.
Located in University Place, WA
: Platinum (PT950) White enamel Round brilliant diamonds Ice skate motif Signed Tiffany & Co. Condition
Diamond, Platinum, Enamel
Tiffany & Co Princess Cut Diamond 0.61 cts D VVS1 Platinum Engagement Ring
By Tiffany & Co.
Located in San Diego, CA
Diamond Registration #: 23922444/I06190082 Metal: Platinum PT950 Size: 5.75 sizable TCW: 0.61 cts
Diamond, Platinum
Peter Suchy .40 Carat Diamond Platinum Dangle Star Earrings
By Peter Suchy
Located in Stamford, CT
diamond, F-G VS approx. .40cts Platinum Stamped: PT950 2.2 grams Top to bottom: 16.9mm or .66 inch Width
Diamond, Platinum
Harry Winston Platinum Pear Shape Diamond Solitaire Pendant Necklace .85ct DVVS2
By Harry Winston
Located in New York, NY
legible. Details Brand: Harry Winston Style: Solitaire Diamond Pendant Metal: Platinum (Pt950) Hallmarks
Diamond, Platinum
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
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
Diamond, Platinum
$38,400Sale Price|20% Off
Tiffany & Co. Soleste Platinum Cushion-Cut Diamond Ring
By Tiffany & Co.
Located in Chicago, IL
A Tiffany & Co. Soleste diamond ring, finely crafted in platinum PT950 with accents of 18 karat
Diamond, White Diamond, Pink Diamond, Platinum, 18k Gold, Rose Gold
Green Tourmaline & Baguette Diamond 8.50TCW Ballerina Platinum Pendant Necklace
Located in San Diego, CA
DEEP GREEN TOURMALINE & BAGUETTE DIAMOND BALLERINA PENDANT NECKLACE Metal: Platinum PT950 Length
Diamond, Tourmaline, Platinum
Fred of Paris Platinum Diamond Engagement Ring 1.22 Carat Sz 6
Located in Feasterville, PA
: Platinum Metal Purity: 950 Color: White Main Stone: Diamond Size: US 6 Weight: 5.1 grams
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.