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4 Carat Colombian Emerald & Diamond Solitaire PT 900 RIng
By Malpani Jewels
Located in Hung Hom, HK
stunning ring, a 4 carat emerald is set with 0.71 carats of white round brilliant diamond in this PT 900
Category

2010s Japanese Art Nouveau Solitaire Rings

Materials

Diamond, Emerald, Platinum

Certified 1 Carat Burma Reddish Purple Ruby Solitaire PT900 Ring
By Malpani Jewels
Located in Hung Hom, HK
brilliant round diamond. The ring is made in PT 900 and has been manufactured in Japan. The image of the
Category

2010s Japanese Contemporary Fashion Rings

Materials

Diamond, White Diamond, Ruby, Platinum

GRS Certified 12.01 Carat 'No Heat Santa Maria' Aquamarine Classical PT 900 Ring
By Malpani Jewels
Located in Hung Hom, HK
. Santa Maria aquamarine represents a particular shade of blue in a deeply saturated hue. This color was originally discovered at the Santa Maria de Itabira mine, in Minas Gerais, Br...
Category

2010s Hong Kong Art Nouveau Solitaire Rings

Materials

Aquamarine, Diamond, Platinum

CGL Certified 0.40 Carat Russian Demantoid Garnet Round Rare Diamond PT 900 Ring
By Malpani Jewels
Located in Hung Hom, HK
One of the rarest garnet varieties, Demantoid can have a green color that rivals emerald and a fire that exceeds diamond. Demantoids are highly prized by both gem collectors and jewe...
Category

2010s Japanese Contemporary Signet Rings

Materials

Garnet, Diamond, White Diamond, Platinum

GIA Certified 5 Carat Burma No Heat Sapphire And Diamond PT900 Ring
By Malpani Jewels
Located in Hung Hom, HK
A stunning 5 carat GIA Certified Burma No heat blue sapphire is set with 1.05 carats of white round brilliant diamond. Burmese sapphires are among the most coveted colored gemstones ...
Category

2010s Japanese Art Nouveau Solitaire Rings

Materials

Diamond, Sapphire, Platinum

GIA Certified 10.03 Carat Emerald Cut Diamond Platinum Ring
By Gad & Co.
Located in Miami, FL
Certificate Number: #2155926250 Ring Details: Ring Type: 3-Stone Ring Metal: Platinum (PT 900) Ring Weight
Category

21st Century and Contemporary Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

0.10ctw Diamond Stackable Band, Platinum, Ring Size 6, Simple Diamond Ring
Located in McLeansville, NC
Ring Size 6 Rise Off Of Finger: 2.5 mm Width: 6 mm Weight: 1.8 dwts. / 2.8 grams Stamps: PT900
Category

Vintage 1980s Band Rings

Materials

Diamond, Platinum

Natural White Diamonds Platinum Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
total 0.29 carat (color E-F, clarity VS) - Made of PT900 - Ring Size US6 (can be sized upon request
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

White Diamond, Platinum

Natural White Diamonds Platinum Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
-F, clarity VS) - Made of PT900 - Ring Size US6 (can be sized upon request) HYT Jewelry is a
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

White Diamond, Platinum

Natural White Diamond Platinum Fashion Ring
By HYT Jewelry
Located in Hong Kong, HK
(color E-F, clarity VS) - Made of PT900 - Ring Size US6 (can be sized upon request) HYT Jewelry is a
Category

2010s Hong Kong Contemporary Fashion Rings

Materials

White Diamond, Platinum

Natural White Diamond Platinum Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
This elegant Platinum ring features spectacular natural Pear-shape and Marquise-shape White
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

White Diamond, Platinum

Certified Colombian Emerald White Diamond Platinum Cocktail Ring
By HYT Jewelry
Located in Hong Kong, HK
carat (color E-F, clarity VVS-VS) - Made of PT900 - Ring Size US6 (can be sized upon request) Emerald
Category

2010s Hong Kong Contemporary Cocktail Rings

Materials

White Diamond, Emerald, Platinum

Platinum PT 900 Emerald Ring with Diamonds
Located in Hong Kong, HK
A beautifully designed elegant natural diamond and natural emerald ring in Platinum PT900 . The
Category

2010s Hong Kong Engagement Rings

Materials

Diamond, Emerald, Platinum

One-of-a-kind Vintage 1.52ct Freeform Ruby Edwardian Diamond Ring in Platinum
Located in Wan Chai District, HK
: 0.30ct 36 Round Brilliant-cut: 0.36ct Metal: Platinum PT900 Total Weight: 8.69g Stamped: PT900 Ring Size
Category

Late 20th Century Hong Kong Edwardian Cluster Rings

Materials

Diamond, Ruby, Platinum

Japan Germany Lab Certified Emerald & Diamond Platinum PT 900 'Big Spread' Ring
By Malpani Jewels
Located in Hung Hom, HK
: Color: D Clarity: VVS The ring is made in Platinum PT 900 and is hand made in Japan Ring size can be
Category

2010s Japanese Contemporary Dome Rings

Materials

Diamond, White Diamond, Emerald, Platinum

Australian White South Sea Pearl and Diamond Ring in Pt 900 Platinum
Located in Melbourne, AU
A 13.3 mm White Australian South Sea Pearl and Diamond Ring in Pt 900 Platinum. The White
Category

2010s Oceanic Contemporary Cluster Rings

Materials

Diamond, South Sea Pearl, Platinum

CGL Certified 0.19 Carat Natural Fancy Pink Diamond PT 900 Solitaire Ring
By Malpani Jewels
Located in Hung Hom, HK
details of the white diamond are mentioned below: Color: D Clarity: VVS Ring size can be changed as per
Category

2010s Japanese Art Nouveau Wedding Rings

Materials

Diamond, White Diamond, Pink Diamond, Platinum

Certified Pink Sapphire Hot Pink Barbie Color & Diamond PT 900 Designer Ring
By Malpani Jewels
Located in Hung Hom, HK
are extremely sought-after. In this ring inspired by Barbie, the pink sapphire weighs 3.49 carat and
Category

2010s Hong Kong Art Nouveau Cocktail Rings

Materials

Diamond, Pink Sapphire, Platinum

1.82 Carat Colombian Emerald & 0.83 Carat White Diamond PT 900 Simple Ring
By Malpani Jewels
Located in Hung Hom, HK
stunning ring, an emerald weighing 1.82 carat is set along with 0.83 carat of white round brilliant diamond
Category

2010s Japanese Art Nouveau Wedding Rings

Materials

White Diamond, Emerald, Platinum

Set in PT 900, 2.34 Carats, Natural Australian Opal & Diamonds Engagement Ring
Located in Hong Kong, HK
A very beautiful and gorgeous, Opal Engagement Cocktail Ring set in Platinum 900 & Diamonds. The
Category

21st Century and Contemporary Indian Modern Engagement Rings

Materials

Diamond, Opal, Platinum

Platinum PT900 Diamond Ring
Located in Hong Kong, HK
A beautiful and elegant diamond ring made in Platinum PT900 . its made with Highest level of
Category

2010s Hong Kong Bridal Rings

Materials

Diamond, Platinum

GIA Certified 6 Carat Thai Ruby Mirror Clean Rare Investment Ring PT 900
By Malpani Jewels
Located in Hung Hom, HK
, making it incredibly collectable. The ring has a GIA certified 6 carat of VVS clarity Thai Ruby. On the
Category

2010s Hong Kong Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Ruby, Platinum

No Heat 2.80 Carat Sapphire Certified and 1 Carat Diamond PT 900 Stunning Ring
By Malpani Jewels
Located in Hung Hom, HK
diamond in this Platinum PT 900 engagement ring. Sapphires that have not undergone any color or clarity
Category

2010s Japanese Art Nouveau Engagement Rings

Materials

Diamond, Sapphire, Platinum

Platinum PT900 Blue Sapphire Ring with Diamonds
Located in Hong Kong, HK
A beautiful and elegant diamond and blue sapphire ring set in Platinum PT900 . Excellent for
Category

2010s Hong Kong Engagement Rings

Materials

Diamond, Blue Sapphire, Platinum

Heart-Shaped Diamond Engagement Ring Set in PT900
Located in Hong Kong, HK
traditional engagement rings. Crafted in PT900 at 2.20 grams, this ring showcases diamonds with exceptional
Category

2010s Hong Kong Contemporary Engagement Rings

Materials

Diamond, 18k Gold

Ruby Sapphire Emerald & Diamond Cluster Ring Platinum PT900 R6720
Located in Osprey, FL
♥ A stunning cluster design ring set with princess-cut rubies, sapphires, and emeralds (all earth
Category

2010s American Cluster Rings

Materials

Diamond, Emerald, Ruby, Sapphire, Platinum

2.79 Carat Emerald and Diamond Ring on PT900 Platinum
Located in Wan Chai District, HK
1.66 carats on Platinum (PT900). The Emerald is originated from Zambia. This ring has high transparency
Category

2010s Unknown Fashion Rings

Materials

Diamond, Emerald, Platinum

Certified PT900 3.30 ct Royal Blue Sapphire Art Deco Engagement Ring
Located in Kaohsiung City, TW
*Certified PT900 3.30 ct Royal Blue Sapphire&Diamonds Antique Art Deco Engagement Ring* AIGS
Category

21st Century and Contemporary Taiwanese Contemporary Engagement Rings

Materials

White Diamond, Blue Sapphire, Sapphire, Diamond, Platinum, White Gold, 1...

Set in PT900, 1.09 carats, natural Colombian Emerald & Diamonds Engagement Ring
By JEWEL HUB
Located in Hong Kong, HK
A very gorgeous and beautiful, modern style, Emerald Ring set in Platinum 900 & Diamonds. The
Category

21st Century and Contemporary Indian Modern Engagement Rings

Materials

Diamond, Emerald, Platinum

18 Karat Gold and Platinum PT900 Natural Emerald and Diamond Ring
Located in Hong Kong, HK
A Gorgeous Estate ring with natural emeralds and diamonds set in a mix of Platinum PT900 and 18K
Category

2010s Hong Kong Cocktail Rings

Materials

Diamond, Emerald, Gold, Platinum

Natural Australian Black Opal & Diamonds Engagement/ Cocktail Ring set in PT900
By JEWEL HUB
Located in Hong Kong, HK
A very important and gorgeous Opal Engagement / Cocktail Ring set in Platinum 900. The weight of
Category

2010s Hong Kong Modern Engagement Rings

Materials

Diamond, Black Opal, Platinum

CGL Certified 2.00 Carat Vivid Red Ruby Diamond PT900 Solitaire Ring
By Malpani Jewels
Located in Hung Hom, HK
CGL Japan Lab Certified, this ring is made in Platinum 900. The ring has been set with certified
Category

2010s Japanese Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Ruby, Platinum

CGL Certified Hauynite Rare Stone Diamond Exquisite Cocktail Ring Platinum PT900
By Malpani Jewels
Located in Hung Hom, HK
which is caused by traces of Fe3+. The ring is crowned with CGL Certified 0.18 carat of Hauynite and
Category

2010s Japanese Contemporary Solitaire Rings

Materials

Diamond, White Diamond, Platinum

Almost 1 Carat Santa Maria Aquamarine & 1 Carat White Diamond PT900 Amazing Ring
By Malpani Jewels
Located in Hung Hom, HK
A 1 carat Santa Maria Aquamarine is set along side with 1 carat diamond on this PT 900 Platinum
Category

2010s Japanese Art Nouveau Cocktail Rings

Materials

Aquamarine, White Diamond, Platinum

Set in PT900, 6.15 carats, Slight Yellow Brown Oval Diamond Engagement Ring
By JEWEL HUB
Located in Hong Kong, HK
A very beautiful and stunning, Diamonds Engagement Ring set in Platinum 900 & Diamonds. The weight
Category

21st Century and Contemporary Indian Modern Engagement Rings

Materials

Diamond, Platinum

Set in PT900, 2.72 Carats Natural Blue Star Sapphire & Diamonds Engagement Ring
By JEWEL HUB
Located in Hong Kong, HK
A very gorgeous and beautiful Blue Star Sapphire Ring set in Platinum 900 & Diamonds. The weight of
Category

21st Century and Contemporary Hong Kong Modern Engagement Rings

Materials

Diamond, Star Sapphire, Platinum

Set in PT900, 10.01 carats, N colour VS2 clarity Heart Diamond Engagement Ring
By JEWEL HUB
Located in Hong Kong, HK
A very special, and one of a kind, Diamonds Engagement Ring set in PT900 & Diamonds. The weight of
Category

21st Century and Contemporary Indian Art Deco Engagement Rings

Materials

Diamond, Platinum

Platinum Coral Diamond Ring
Located in New York, NY
. Marked: Pt 900 / D 1.50. Total weight: 28.5 grams. Size 7.
Category

Vintage 1980s Cocktail Rings

Materials

Coral, Diamond, Platinum

Diamond Platina Solitair Ring
Located in The Hague, ZH
Stunning solitair ring in 900 pt Platina, with one 0.407 carat diamond Diamond, total 0.407 carat
Category

21st Century and Contemporary Unknown Modern Solitaire Rings

Materials

Diamond, Platinum

Platinum Open Wedding Band Ring
Located in Houston, TX
900 platinum. Engraved with "Pt 900". Pre-owned in excellent condition. Might shows minor signs of
Category

21st Century and Contemporary Unknown Band Rings

Materials

Platinum

4.75ct Sapphire Diamond Ring
Located in New York, NY
top of the ring measures 16.5mm by 15mm. The ring is stamped Pt900 S4.75 0.63 and weighs 8.6 grams
Category

20th Century Cocktail Rings

Materials

Sapphire, Platinum

Platinum Akoya Pearl Diamond Ring
Located in Palm Desert, CA
. Stamped inside the band is Pt 900. The ring size is 4. The weight of the ring is 6.35 grams.
Category

Vintage 1980s American Retro Cocktail Rings

Materials

Diamond, Pearl, Platinum

0.35ctw Diamond Bypass Dome Ring, Platinum, Ring Platinum Diamond Band
Located in McLeansville, NC
Weight: 5.5 dwts. / 8.5 grams Stamps: PT900 LR Ring Sizings & Modifications: *Please reach out before
Category

1990s Dome Rings

Materials

Diamond, Platinum

Sapphire & Diamond-set Platinum Ring
Located in Litchfield, CT
, possibly heated, and .57 carats total weight of E color, VS1 clarity diamonds. HALLMARKS: PT 900, E 72
Category

Vintage 1960s Fashion Rings

Materials

Diamond, Sapphire, Platinum

Vintage Platinum Aquamarine & Diamond Ring
Located in Henderson, NV
Crafted in platinum, the ring features an oval cut aquamarine surrounded by baguette and round cut
Category

20th Century Engagement Rings

Materials

Aquamarine, Diamond, Platinum

2.58ct Emerald 2.30ct Diamond Ring
Located in New York, NY
measures 20mm by 19mm. The ring is stamped Pt900 2.58 2.30 and weighs 11.1 grams. The ring is size 7 but it
Category

20th Century Cocktail Rings

Materials

Diamond, Emerald, Platinum

Vintage Platinum Old-European Cut Diamond Ring
Located in Laguna Beach, CA
Vintage platinum and diamond ring. Stamped Pt 900 and weighs 6.8 grams. The center diamond is an
Category

Mid-20th Century Cluster Rings

Materials

Diamond, Platinum

GIA Certified 2.01ct Diamond Engagement Ring
Located in New York, NY
D0.37 Pt900 and weighs 4.7 grams. The ring is size 6 but it can be resized.
Category

20th Century Engagement Rings

Materials

Diamond, Platinum

Mikimoto Platinum Black Pearl and Diamond Ring
By Mikimoto
Located in Philadelphia, PA
. Ring size US 6.50 Signed with the Mikimoto stamp and "Pt900"
Category

21st Century and Contemporary Unknown Fashion Rings

Materials

Diamond, Black Pearl, Platinum

5.66ct Sapphire 0.89ct Diamond Engagement Ring
Located in New York, NY
measures 16mm by 15mm. The ring is stamped Pt900 S5.66 D0.89 and weighs 8.7 grams. The ring is size 6 1/2
Category

20th Century Engagement Rings

Materials

Sapphire, Platinum

5.53 Carat Emerald Diamond Platinum Ring
Located in New York, NY
. Ring size - 6, ring top - 21mm x 20mm. Marked: R5.53, D1.89, pt900. Weight - 13.2 grams.
Category

20th Century More Rings

Materials

Diamond, Emerald, Platinum

Heart-Shaped Diamond and Platinum Engagement Ring
Located in Hong Kong, HK
. Crafted in Pt 900 with 2.69 grams, it's a graceful piece to adorn your finger. As you gently slip this
Category

2010s Hong Kong Contemporary Engagement Rings

Materials

Diamond, Platinum

Vintage Pearl and Diamond Cocktail Ring
Located in NEW ORLEANS, LA
with VS clarity. The top of the ring measures 20mm in diameter. The ring is stamped Pt900 D2.26 and
Category

21st Century and Contemporary Romantic Cocktail Rings

Materials

Diamond, Pearl, Platinum

2.29ct Sapphire 1.82ct Diamond Engagement Ring
Located in New York, NY
measures 18mm by 19mm. The ring is stamped 1.82 2.29 Pt900 and weighs 10.3 grams. The ring is size 6 1/4
Category

20th Century Engagement Rings

Materials

Diamond, Sapphire, Platinum

7.72ct Ceylon Sapphire 1.38ct Diamond Ring
Located in New York, NY
ring measures 17mm by 20mm. The ring is stamped Pt900 7.72 D1.38 and weighs 10.6 grams. The ring is
Category

20th Century Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Natural 3.58 Carat Sapphire Diamond Platinum Ring
Located in New York, NY
: PT.900
Category

21st Century and Contemporary American Contemporary Cocktail Rings

Materials

Diamond, Sapphire, Platinum

Large 10.48 Carat Diamond Platinum Ring
Located in New York, NY
10.48ct. graded F-G color with VS clarity. The ring is stamped 'Pt900' and the diamond weight '10.48' and
Category

20th Century Cluster Rings

Materials

Diamond, Platinum

Retro 1950s Emerald and Diamond Ring
Located in Litchfield, CT
Circa 1950s, platinum. The brilliant green emerald in this gorgeous platinum ring is complemented
Category

Vintage 1950s American Cocktail Rings

Materials

Diamond, Emerald, Platinum

3 Carat Sapphire Diamond Platinum Ring
Located in New York, NY
H color with VS clarity. The ring is stamped Pt900 D2.56 S3.00 and weighs 15.5 grams. It is
Category

20th Century Cluster Rings

Materials

Sapphire, Diamond, Platinum

1.04 Carat Emerald Diamond Ballerina Ring
Located in New York, NY
with VS clarity. The ring is stamped Pt900 E 1.04 1.25. It is currently size 5 3/4, and can easily be
Category

20th Century Engagement Rings

Materials

Diamond, Emerald, Platinum

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Pt900 Ring For Sale on 1stDibs

You are likely to find exactly the pt900 ring you’re looking for on 1stDibs, as there is a broad range for sale. Frequently made of Platinum, Gold and 18k Gold, this item was constructed with great care. In our selection of items, you can find a vintage example as well as a contemporary version. If you’re looking for a pt900 ring from a specific time period, our collection is diverse and broad-ranging, and you’ll find at least one that dates back to the 20th Century while another version may have been produced as recently as the 21st Century. A pt900 ring from Malpani Jewels, Noriko Matsuzaki and Tsutomu Matsuzaki — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for an oval cut version of this piece and are unable to find the perfect match, our selection also includes round cut and cabochon alternatives. When shopping for a pt900 ring, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a Pt900 Ring?

The price for a pt900 ring starts at $700 and tops out at $225,000 with these rings, on average, selling for $3,450.

Finding the Right rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. 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

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.