$6,985
H 1 in W 0.64 in L 17.5 in
Platinum GIA 5.89ct Large Oval Sapphire w/ Dual Halo Diamond Pendant Necklace
Located in Montclair, NJ
) Total Carat Weight: 5.89 (exact) Material: Solid .850 Platinum Chain with .900 Platinum Pendant Weight
Diamond, Sapphire, Platinum
2.53ct Vivid Blue Oval Cut Santa Maria Aquamarine & Pavé Diamond Platinum Ring
Located in Birmingham, GB
. This fine quality Santa Maria aquamarine is set in a beautiful modern 900 platinum ring with pavé set
Aquamarine, Diamond, White Diamond, Platinum
Vintage Platinum 0.73ctw Old European Prong Diamond Solitaire Engagement Ring
Located in Montclair, NJ
Here we have a gorgeous, vintage, diamond engagement ring that was crafted from solid .900 platinum
Diamond, Platinum
$10,432
W 0.48 in D 0.4 in L 1.19 in
COLORWONDER Tanzanite Rhodochrosite Pendant w. Chain 10 / 2 ct AAA+ Platinum
Located in Viena, Viena
oval-faceted rhodochrosite in rare purity and colour AAA+, approx. 1.84 ct, pendant with chain in 900
White Diamond, Spinel, Tanzanite, Platinum
1.60ct FINE Top Grade Australian Black Opal & Diamond Three Stone Platinum Ring
By Gems and Jewels UK
Located in Birmingham, GB
hallmarked by UK assay office as 900 platinum to guarantee metal quality. All our jewellery is posted safely
Diamond, Opal, Black Opal, Platinum
$2,390
H 1.1 in W 0.59 in L 19.5 in
Antique Platinum Old Cut Diamond Cross Pendant w/ Long Open Link Necklace
Located in Montclair, NJ
Brilliant White Diamonds - 0.13ctw (approx.) Material: Solid .900+ Platinum Cross & Chain with White
Diamond, Gold, White Gold, Platinum
$3,890
H 0.85 in W 0.19 in
Platinum & Gold 1.80ctw High Quality Square Sapphire w/ Diamond Cuff Earrings
Located in Montclair, NJ
: Solid .900+ Platinum Earrings w/ 14k White Gold Posts & Backs Weight: 15 Grams Backing: Posts w
Diamond, Sapphire, Gold, 14k Gold, White Gold, Platinum
Peter Suchy .88 Carat Round Brilliant Cut Diamond Platinum Eternity Ring
By Peter Suchy
Located in Stamford, CT
. .88cts Size 6.5 Platinum Stamped: PT 900 3.9 grams Width at top: 3.2mm Height at top: 2.3mm Width at
Diamond, Platinum
Very Nice Platinum 0.96ctw Oval Ruby w/ Marquise & Round Diamond Band Ring
Located in Montclair, NJ
Brilliant White Diamonds - 0.26ctw (exact) Total carat weight: 0.96 (exact) Material: Solid .900 Platinum
Diamond, Ruby, Platinum
2.99 Carat TW Natural Green Emerald & Natural White Diamond Platinum Ring Band
Located in Los Angeles, CA
in 900 platinum, the ring weighs approximately 7.21 grams. The top measures approximately 17.23 mm by
White Diamond, Emerald, Platinum
$13,200Sale Price|20% Off
L 38 in
ART-DECO 1930 Graduated Jadeite Green Jade Necklace Sautoir In Platinum &
Located in Miami, FL
graduated beads carved from natural jadeite jade and a security boxed lock crafted in solid .900/.999
Diamond, Jade, White Diamond, Platinum
Antique Edwardian Platinum European Diamond Milgrain Engraved Dome Mosaic Ring
Located in Montclair, NJ
This incredible, all original, antique Edwardian period ring is crafted in solid platinum. It
Diamond, Platinum
$65,000
H 1.2 in W 1.9 in
Suzanne Belperron French Platinum Carved Fluted Rock Crystal Fan Diamond Brooch
By Suzanne Belperron
Located in Montclair, NJ
Set - G/H Color - VS1/VS2 Clarity Total Carat Weight for Diamond: 3.65 (approx.) Material: Solid .900
Diamond, Rock Crystal, Gold, 14k Gold, Yellow Gold, Platinum
Antique 1.10 Carat Ruby and 1.18 Carat Diamond, Platinum Ring Circa 1935
Located in Jesmond, Newcastle Upon Tyne
.900 PLAT). This impressive cabochon ruby and diamond ring in platinum is supplied with an IDGL
Diamond, Ruby, Platinum
Vintage Platinum 1.0ctw Carre Step Cut Diamond High Profile Band Ring Size 5
Located in Montclair, NJ
- VS1-VS2 Clarity - 1.0ctw (approx.) Material: Solid .900 Platinum Total Weight: 4.68 Grams Overall
Diamond, Platinum
$43,920Sale Price|20% Off
L 17 in
EDWARDIAN Belle Epoque 1905 Platinum Festoon Necklace With 10.35 Ctw Diamonds
Located in Miami, FL
crafted as a festoon, with multiples movable parts made up in solid .900/.999 platinum. The necklace is
Diamond, Platinum
McTeigue Sailboat Pendant Vintage Diamond Platinum 18k Gold Art Deco Jewelry
By McTeigue
Located in Torrance, CA
Finely detailed vintage McTeigue Sailboat pendant crafted in 900 platinum and 18k yellow gold
Diamond, White Diamond, Gold, 18k Gold, Yellow Gold, Platinum
4.65ct GIA Certified Octagon Vivid Blue Ceylon Sapphire & Diamond Platinum Ring
By Gems and Jewels UK
Located in Birmingham, GB
excellent cut. 0.42ct total. All set in a beautifully made 900 platinum five stone ring. Ring size UK N
Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum
$7,800Sale Price|20% Off
W 0.43 in L 16 in
TIFFANY & CO. 1980 Angela Cummings Platinum Lentil Necklace Diamonds & Hematite
By Angela Cummings for Tiffany & Co.
Located in Miami, FL
necklace has been crafted with multiples parts made up in solid .900/.999 platinum and forty-one lentils
Diamond, Hematite, White Diamond, Platinum
Platinum GIA Large 7.38ctw Very Fine Colombian Emerald w/ Diamond Ballerina Ring
Located in Montclair, NJ
Weight: 7.38 (exact) Material: Solid .900 Platinum (tested) - Stamped PT900 Weight: 16.39 Grams Ring
Diamond, Emerald, Platinum
Classic Platinum GIA 4.23ctw Burma Spinach Green A Jade w/ Diamond Ring
Located in Montclair, NJ
- Nice Brilliant White Diamonds - 0.70ctw (exact) Total Carat Weight: 4.23 (exact) Material: Solid .900
Diamond, Jade, Platinum
GIA Certified .56 Carat Natural Emerald Diamond Ballerina Platinum Cocktail Ring
Located in Stamford, CT
.48cts, F, VS Size 5.75 and sizable 900 Platinum 5.4 grams Tested: 900 Platinum Stamped: P 900 Hallmark
Diamond, Emerald, Platinum
Vintage Platinum Large 13.64ctw GIA Red Orange Play Opal Diamond Sides Ring
Located in Montclair, NJ
.900 Platinum (tested)- Stamped PT900 Weight: 14.56 Grams Ring Size: 6.5 (Fitted on a finger. We can
Diamond, Opal, Platinum
Vintage Platinum 1.50ctw Round Solitaire w/ Baguette Diamond Engagement Ring
Located in Montclair, NJ
(approx.) Total Carat Weight: 1.50 (approx.) Material: Solid .900 Platinum Weight: 2.90 Grams Ring Size
Diamond, Platinum
GIA 1.26 Blue Round Sapphire Diamond Platinum Three Stone Engagement Ring
Located in Stamford, CT
Platinum 6.7 grams Tested: Platinum Stamped: Pt 900 Hallmark: NK Width at top: 6.04mm Height at top: 7.26mm
Diamond, Sapphire, Blue Sapphire, Platinum
Platinum GIA 6.01ctw Burma No Heat Greenish Blue Sapphire Baguette Diamond Ring
Located in Montclair, NJ
Clarity - 0.40ctw (approx.) Total Carat Weight: 6.01 (approx.) Material: Solid .900+ Platinum Weight
Diamond, Sapphire, Platinum
Antique Edwardian Diamond Band Sz 6.75 Ring Platinum Wedding Eternity Jewelry
Located in Torrance, CA
Elegant antique Edwardian ring (circa 1918), crafted in 900 platinum. Single cut diamonds total
Diamond, White Diamond, Platinum
$2,600Sale Price / set|20% Off
H 0.6 in W 0.17 in L 17.5 in
MODERNIST Pendant Necklace-Chain In Platinum With Graduated VVS White Diamonds
Located in Miami, FL
crafted in solid .900/.999 platinum with polished finish and embellished with five natural white colorless
Diamond, White Diamond, Platinum
Antique Art Deco Platinum GIA 1.32ctw Old Cut Diamond Engagement Ring
Located in Montclair, NJ
Carat Weight: 1.32 (approx.) Material: Solid .900 Platinum Weight: 2.66 Grams Ring Size: 5.5 (Fitted on
Diamond, Platinum
1.04ct Princess Diamond Engagement Ring 18k Gold Platinum Size 5.5-5.75
Located in McLeansville, NC
: 18k White Gold Setting, 900 Platinum Band Weight: 7.3 Grams Stamps: 18k Plat Face Height: 6.7 mm
Diamond, 18k Gold, White Gold, Platinum
David Webb 18K Gold and Platinum 1.20ct Diamond Cocktail Ring DW23-020426
By David Webb
Located in Southampton, PA
crafted in 18K white gold and 900 platinum. The domed band measures 7mm wide, with one half of the
Diamond, Crystal, 18k Gold, White Gold, Platinum
Vintage Platinum GIA 5.56ctw Old Cut Round & Baguette Diamond Engagement Ring
Located in Montclair, NJ
.) Total Carat Weight: 5.56 (approx.) Material: Solid .900 Platinum Weight: 10.06 Grams Ring Size: 6.5 (We
Diamond, Platinum
Antique Art Deco 1.20ct Sapphire and 0.96ct Diamond Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
' and the platinum fineness mark ( 900 ). This antique Art Deco cocktail ring is supplied with an
Diamond, Sapphire, Platinum
$3,027
W 0.4 in D 0.28 in L 0.6 in
Paraiba Tourmaline Pendant Platinum with Chain 1.22 ct 0.28 ct Lagune Color
Located in Viena, Viena
, worked in 900 platinum, with matching chain in 44.5 cm (can be shortened via slider) in 850 platinum
Diamond, Tourmaline, Paraiba, Platinum
4.17ct GIA Certified Colombian Emerald & Diamond Pear Cut Platinum Halo Pendant
By Gems and Jewels UK
Located in Birmingham, GB
beautiful 900 platinum pendant necklace. Beautifully set and finished. Pendant and chain fully hallmarked
Diamond, White Diamond, Emerald, Platinum
Vintage Platinum GIA 2.82ctw Pear Cut Sapphire w/ Baguette Diamond Sides Ring
Located in Montclair, NJ
: 2.82 (exact) Material: Solid .900 Platinum (tested)- Stamped PLAT Weight: 5.08 Grams Ring Size: 7.0
Diamond, Sapphire, Platinum
$798
H 1.07 in W 0.44 in
Antique 14k Gold & Platinum Round & Oval Black Onyx Wheat Work Dangle Earrings
Located in Montclair, NJ
- Bezel Set - Black Color - 14.35x9.0mm (approx.) Material: Solid 14k Yellow Gold w/ Solid .900 Platinum
Onyx, Gold, 14k Gold, Yellow Gold, Platinum
New Solid Platinum 0.80ctw Square Sapphire w/ Diamond Halo Geometric Ring
Located in Montclair, NJ
- 0.40ctw (approx.) Total Carat Weight: 0.80 (approx.) Material: Solid .900+ Platinum (tested) - Stamped
Diamond, Sapphire, Platinum
Platinum GIA High Quality 3.21ctw Tsavorite w/ Diamond Halo Flower Cluster Ring
Located in Montclair, NJ
(exact) Material: Solid .900 Platinum (tested) - PT900 Stamped Weight: 9.70 Grams Ring Size: 6.0 (We can
Diamond, Tsavorite, Platinum
1.76ctw Oval Emerald Diamond Ring Platinum 18k Gold Engagement Size 4.75
Located in McLeansville, NC
- H Clarity - SI1 - SI2 Metal: 900 Platinum Band (stamped), 18k Yellow Gold Setting (XRF tested
Diamond, Emerald, 18k Gold, Platinum
Antique Platinum 0.60ctw Old European Cut Diamond Floral Work Engagement Ring
Located in Montclair, NJ
- 0.06ct (approx.) Total Carat Weight: 0.60 (approx.) Material: Solid .900 Platinum Weight: 3.10 Grams
Diamond, Platinum
Platinum 3.67ctw GIA Octagonal Green Emerald w/ Baguette & Round Diamond Ring
Located in Montclair, NJ
- 0.80ctw (approx.) Total Carat Weight: 3.67 (approx.) Material: Solid .900+ Platinum Weight: 10.54 Grams
Diamond, Emerald, Platinum
$5,998
H 1.52 in W 2.52 in
Vintage Handmade Platinum 20.5ctw GIA Emerald Cut Aquamarine Diamond Wire Brooch
Located in Montclair, NJ
Carat Weight: 20.50 (approx.) Material: Solid .900 Platinum (Exact % could be slightly off) Total
Aquamarine, Diamond, Platinum
Vintage Platinum 1ctw Carré Step Cut VS Diamond Channel 5 Stone Band Ring
Located in Montclair, NJ
/VS2 Clarity - 1.0ctw (exact) Material: Solid .900 Platinum (tested) - Stamped PT900 Total Weight
Diamond, Platinum
$7,560Sale Price / set|20% Off
H 2.4 in W 1.06 in L 16.25 in
BELLE EPOQUE 1900 Edwardian Necklace In Platinum Diamonds, Onyx & Natural Pearl
Located in Miami, FL
crafted with multiples movable parts made up in solid .900/.999 platinum, with classic garlands and bows
Diamond, Onyx, Pearl, White Diamond, Natural Pearl, Platinum
Vintage Art Deco 0.89ct Diamond Ring Sz 5.75 Platinum Engagement Bridal Jewelry
Located in Torrance, CA
Finely detailed vintage Art Deco diamond ring (circa 1920s to 1930s) crafted in 900 platinum
Diamond, White Diamond, Platinum
1.06 Carat Diamond Sapphire Enamel Platinum Midcentury Engagement Ring
Located in Stamford, CT
diamonds approx. total weight .65cts, G, VS Size 6.5 and sizable Platinum Stamped ER PT 900 7.1 grams 7/16
Blue Sapphire, Diamond, Sapphire, Enamel, Platinum
Platinum 4.55ctw Elongated Step Cut Aquamarine & Old Cut Diamond Cocktail Ring
Located in Montclair, NJ
: Solid .900+ Platinum Weight: 5.63 Grams Ring Size: 6.5 (Fitted on a finger. We can custom size this ring
Aquamarine, Diamond, Platinum
$3,920Sale Price|20% Off
1.16 Ct GIA Cert No oil Emerald Ring With Natural Diamond And Platinum Gold
By Gems WB
Located in bangkok, TH
-22.13Gram/4P 3-total weight : 16.16 Gram Platinum Gold 900 USA7# / Italy HK 14# / Euro 54# GIA
Diamond, Emerald, Platinum
Diamond Marquise Platinum Gold Ring 1.11 ct 0.36 ct exclusive and excellent
Located in Viena, Viena
an exclusive ring in 900 platinum and 750 yellow gold...excellently designed by the combination of
Diamond, Platinum, Gold
Vintage Platinum 3.04ctw GIA Round Brilliant Green Emerald Baguette Diamond Ring
Located in Montclair, NJ
Here we have a magnificent vintage emerald and diamond ring that is crafted in solid platinum. The
Emerald, Platinum
$3,836Sale Price|20% Off
L 40 in
ART DECO 1935 Stations Necklace Sautoir In Platinum European Diamonds & Emeralds
Located in Miami, FL
American art-deco period, circa 1935. This piece was carefully crafted in solid .900/.999 platinum and
Diamond, Emerald, White Diamond, Platinum
Platinum GIA 1.45ct Vivid Red Ruby Pear No Heat & Diamond Sides Ring
Located in Montclair, NJ
) Total Carat Weight: 1.45 (exact) Material: Solid .900 Platinum (tested & stamped) Weight: 6.02 Grams
Diamond, Ruby, Platinum
Platinum GIA 10.19ctw Elongated Emerald Cut Sapphire & Diamond Custom Made Ring
Located in Montclair, NJ
) Material: Solid .900+ Platinum Weight: 9.14 Grams Ring Size: 6.5 (Fitted on a finger. We can custom size
Diamond, Sapphire, Platinum
Vintage Art Deco Diamond Calibre Ruby Ring Sz 8.5 Platinum Engagement Jewelry
Located in Torrance, CA
Finely detailed vintage Art Deco diamond & ruby ring (circa 1920s to 1930s) crafted in 900 platinum
Diamond, White Diamond, Ruby, Platinum
Antique Edwardian Platinum 1.26ctw GIA European Diamond Filigree Engagement Ring
Located in Montclair, NJ
(approx.) Material: Solid .900 Platinum Weight: 3.74 Grams Ring Size: 6.5 (We can custom size this ring
Diamond, Platinum
Platinum GIA 2.53ctw Oval Ruby w/ Baguette & Round Diamond Flared Ballerina Ring
Located in Montclair, NJ
carat weight: 2.53 (exact) Material: Solid .900 Platinum Weight: 12.55 Grams Ring Size: 5.5 (Fitted on
Diamond, Ruby, 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.
Ancient Egyptians referred to the vibrant stone as the “gem of the sun.”
There are many ways to showcase a diamond, from traditional prongs to a smooth, streamlined bezel. Here’s everything you need to consider.
The vintage bombé ring is bursting with color and timeless style.
Zircon is a magnificent and underrated natural gemstone that has been worn and adored for centuries.
Givers of fine gems enjoy surprise more than receivers, and women more than men. Find out what else our survey of 3,000 Americans revealed.
If diamonds don’t seem right, what about a magnificent sapphire, ruby or emerald?
Accounting for just 1 percent of all diamonds, these marvels of nature are exceedingly rare and gorgeously complex.
Learn about these antique jewelry styles, then choose a design that speaks to you.