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Tiffany & Co. Diamond Solitaire Engagement Ring Platinum 1.21ct GIA Knife-Edge
By Tiffany & Co.
Located in Greensboro, NC
: Tiffany & Co.
Metal Content: 950 Platinum
Stone Information
Natural Diamond
Carat: 1.21ct
Cut: Round
Category
21st Century and Contemporary Engagement Rings
Materials
Diamond, Platinum
Platinum Diamond Vintage Five-Stone Wedding Band - 900 Rnd.50ctw Knife-Edge Ring
Located in Greensboro, NC
Platinum
Stone Information
Natural Diamonds
Carat(s): .50ctw
Cut: Round Brilliant
Color: F - G
Clarity
Category
21st Century and Contemporary Wedding Rings
Materials
Diamond, Platinum
Vintage Circa 1990s 0.26 Carat Round Brilliant Diamond Platinum Knife Edge Band
Located in Hamilton, AU
A diamond embellished knife edge setting crafted runs around the gleaming front of the platinum
Category
20th Century Unknown Modern Band Rings
Materials
Diamond, Platinum
Late Edwardian Platinum Rare Peruzzi Cut Diamond Ring 1.10ct
Located in Narberth, PA
(ca1910) era! This platinum ring holds a sparkling 1.10ct old Peruzzi Cut diamond at the center. The
Category
Early 20th Century Unknown Art Deco Engagement Rings
Materials
Diamond, Platinum
Retro 0.49 CTW Transitional Cut Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
and bright
Set in square and diamond forms
Completed by subtle knife edge shank
Stamped for platinum
Category
Vintage 1940s Engagement Rings
Materials
Diamond, Platinum
Hancocks 2.01carat Rare Vintage Carre Cut Diamond Platinum Solitaire Ring
By Hancocks
Located in London, GB
stylised honeycomb pattern, all in a finely hand crafted platinum mount with knife edge band. This is a
Category
2010s British Engagement Rings
Materials
Diamond, Platinum
Antique Art Deco Platinum Single Cut Diamond Wedding Band - Size 6
Located in Great Neck, NY
Beautiful Antique Art Deco Platinum Single Cut Diamond Wedding Band - Size 6. This gorgeous antique
Category
Vintage 1920s Art Deco Wedding Rings
Materials
Diamond, Platinum
Mid-Century Single Cut Diamond Platinum Seven Stone Vintage Wedding Band Ring
Located in Philadelphia, PA
Featuring seven single cut diamonds weighing approximately 0.14 carat total
G color with VS2
Category
Vintage 1950s Wedding Rings
Materials
Diamond, Platinum
Platinum GIA No Heat 6.21ctw Zoned Greenish Blue Emerald Cut Sapphire Ring
Located in Montclair, NJ
Here we have a truly magnificent sapphire solitaire ring newly crafted from solid platinum. The
Category
2010s American Engagement Rings
Materials
Sapphire, Platinum
Tiffany & Co. 1.74 Carat Diamond Knife Edge Engagement Ring
By Tiffany & Co.
Located in Bethesda, MD
.
• Metal: Platinum
• Circa: 2023
• Size: Ring size 6 and can be resized
• Gemstone: 1 round brilliant cut
Category
2010s Engagement Rings
Materials
Diamond, Platinum
New 1.57ctw Round Cut Sapphire & Diamond Ring, 900 Platinum & 14k White Gold
Located in Greensboro, NC
Captivating beauty awaits with this heavenly NEW ring! Crafted in 900 platinum and featuring a
Category
21st Century and Contemporary More Rings
Materials
Diamond, Sapphire, White Gold, Platinum
Birks Maison Mid-Century 2.88 CTW Heart Cut Diamond Platinum Engagement Ring GIA
By Birks
Located in Philadelphia, PA
with VS2 clarity
Completed by subtle knife edge shank
Stamped for platinum
With maker's mark for Birks
Category
Vintage 1950s Engagement Rings
Materials
Diamond, Platinum
Tiffany & Co. 1.37 Carat Diamond Knife Edge Engagement Ring
By Tiffany & Co.
Located in Bethesda, MD
VS2 clarity.
• Metal: Platinum
• Circa: 2005
• Gemstone: 1 round brilliant cut diamond=1.37 carats I
Category
Early 2000s Engagement Rings
Materials
Diamond, Platinum
Emerald Cut Diamond Platinum Flush Set Solitaire Unisex Engagement Ring
Located in Philadelphia, PA
Flush set in a faceted octagonal form head
With a knife edge shank
Tested as platinum
Circa: 21st
Category
21st Century and Contemporary Engagement Rings
Materials
Diamond, Platinum
1930s Art Deco Rose cut Diamonds Platinum Dangle Earrings
Located in Poitiers, FR
earrings, featuring a rose-cut diamond in a closed setting and a knife also set with a line of 5 rose-cut
Category
Vintage 1930s Unknown Art Deco Dangle Earrings
Materials
Diamond, White Diamond, Platinum
Mid-Century Old European Cut Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
shoulders
Completed by subtle knife edge shank
Stamped for platinum
With partial maker's mark
Circa: 1950
Category
Vintage 1950s Engagement Rings
Materials
Diamond, Platinum
Platinum Diamond Vintage Engagement Ring, 900 Round Cut 1.18 Carat
Located in Greensboro, NC
Surprise the love of your life with her dream ring! Crafted in heirloom-quality 900 platinum, this
Category
20th Century Engagement Rings
Materials
Diamond, Platinum
Mid-Century Transitional Cut 1.60 Carats Diamond Platinum Engagement Ring
Located in Philadelphia, PA
and knife edge shank. Stamped for platinum. Circa: 1950's. Ring size: 5 3/4 and sizable. Measures
Category
Vintage 1950s Retro Engagement Rings
Materials
Diamond, White Diamond, Platinum
Antique Art Deco Platinum Old European Cut Diamond Wedding Band
Located in Great Neck, NY
Beautiful Antique Art Deco Platinum Old European Cut Diamond Wedding Band. This gorgeous Art Deco
Category
Antique Early 19th Century Unknown Art Deco Band Rings
Materials
Diamond, Platinum
GIA Certed Platinum Round Brilliant Cut Diamond Ring 2.01ct G/SI2
Located in London, GB
A breathtaking solitaire diamond engagement ring set in platinum. The solitaire is set to the
Category
21st Century and Contemporary Solitaire Rings
Materials
Diamond, Platinum
Platinum 1.14TCW Old European Cut Diamond Art Deco Engagement Ring
Located in Towson, MD
platinum stunner fits the bill! Set with a gorgeous 1 carat center old european cut (OEC) diamond with VS1
Category
Vintage 1920s American Art Deco Engagement Rings
Materials
Diamond, Platinum
Angara Gia Certified Square Emerald-Cut Aquamarine & Diamond Ring in Platinum
By ANGARA INC.
Located in Los Angeles, CA
platinum ring. To top it off, a princess-cut diamond is bezel-set on the bridge for a sparkly surprise.
Category
21st Century and Contemporary American Modern Engagement Rings
Materials
Platinum
Mid-Century 3.62 CTW Asscher Cut Diamond Platinum Vintage Engagement Ring GIA
Located in Philadelphia, PA
Centering an Asscher cut diamond weighing 3.42 carats - J color with VS2 clarity
Set with wide
Category
Vintage 1950s Engagement Rings
Materials
Diamond, Platinum
Tiffany & Co. 0.33 Carat Princess cut Diamond and Platinum Engagement Ring
By Tiffany & Co.
Located in Atlanta, GA
, VS clarity diamond that sits flush in a four prong setting.
Featuring a knife-edge Platinum band
Category
21st Century and Contemporary American Modern Engagement Rings
Materials
Diamond, Platinum
NEW Platinum GIA 1.01ctw Trillion Cut Bezel Diamond Solitaire Engagement Ring
Located in Montclair, NJ
solid platinum. The GIA certified solitaire has an amazing trillion cut and is neatly bezel set at the
Category
2010s American Solitaire Rings
Materials
Diamond, Platinum
Vintage Tiffany & Co. 0.20ct Round Brilliant Cut Diamond Ring in Platinum
By Tiffany & Co.
Located in London, GB
platinum.
The piece is solely set with a beautiful 0.20 carat round brilliant cut diamond which is six
Category
Early 2000s Unknown Modern Solitaire Rings
Materials
Diamond, Platinum
ANGARA GIA Certified Natural Emerald-Cut Aquamarine Halo Ring in Platinum
By ANGARA INC.
Located in Los Angeles, CA
GIA Certified Emerald-Cut Aquamarine Halo Ring with Knife-Edge Diamond Shank
Category
21st Century and Contemporary American Modern Engagement Rings
Materials
Platinum
Retro 1.17 Carats Old European Cut Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
surround. Completed by knife edge shank. Inscribed 'L.Z. to E.M.W. 4/22/41'. Stamped .900 PLAT for platinum
Category
Vintage 1940s Retro Engagement Rings
Materials
Diamond, White Diamond, Platinum
Edwardian Platinum Old Mine Rose Cut Diamond Pearl Pendant Necklace Edwardian
Located in New York, NY
gorgeous Pearls all set in Platinum with a Platinum link chain. The wonderful knife edge pendant has
Category
Early 20th Century Unknown Edwardian Pendant Necklaces
Materials
Diamond, Pearl, 14k Gold, Platinum, Gold
H 1.75 in W 0.4 in L 12.5 in
Tiffany & Co. 1.34 Carat Diamond Knife Edge Engagement Ring and Wedding Band
By Tiffany & Co.
Located in Bethesda, MD
The ring features a center brilliant cut diamond weighing 1.34 carats. The diamond is I color and
Category
Early 2000s Engagement Rings
Materials
Diamond, Platinum
Retro 0.30 CTW Old European Cut Diamond Platinum Vintage Engagement Ring
Located in Philadelphia, PA
bow motif with milgrain surround
With knife edge shank
Stamped for platinum
Circa: 1940's
Ring size: 6
Category
Vintage 1940s Engagement Rings
Materials
Diamond, White Diamond, Platinum
Bailey Banks & Biddle 1.67 CTW Emerald Cut Sapphire Diamond Platinum Ring
Located in Philadelphia, PA
knife edge shank
Stamped for platinum
With maker's mark for Bailey Banks and Biddle
Circa: 1950's
Ring
Category
Vintage 1950s Modern Cocktail Rings
Materials
Blue Sapphire, Sapphire, White Diamond, Diamond, Platinum
Classic Art Deco Platinum Solitaire Old European Cut Diamond Engagement Ring
Located in Addison, TX
Presented here is a timeless platinum engagement ring in the Art Deco style. The delicate knife
Category
Vintage 1920s Art Deco Solitaire Rings
Materials
White Diamond, Gold, Platinum
Rose Cut Diamond Platinum Crescent Moon Pendant Necklace French Belle Epoque
Located in New York, NY
in Platinum atop 18 Karat Gold. The magnificent jewel has nine vivid sparkling antique Rose Cut
Category
Antique 19th Century French Belle Époque Pendant Necklaces
Materials
Diamond, Gold, 18k Gold, Yellow Gold, Platinum
Mid-Century 1.39 Carats Old European Cut Diamond Platinum Bezel Engagement Ring
Located in Philadelphia, PA
approximately 0.31 carat total. Eye clean and bright. Completed by knife edge shank. Stamped for platinum
Category
Vintage 1950s Engagement Rings
Materials
Diamond, White Diamond, Platinum
Art Deco 0.45 CTW Old European Cut Diamond Platinum Scroll Engagement Ring
Located in Philadelphia, PA
terminals
Completed by knife edge shank
Stamped for platinum
With partial maker's mark
Circa: 1930s
Ring
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
ANGARA Three Stone GIA Certified Emerald-Cut White Sapphire Ring in Platinum
By ANGARA INC.
Located in Los Angeles, CA
Three Stone GIA Certified Emerald-Cut White Sapphire Knife-Edge Ring
Category
21st Century and Contemporary American Modern Three-Stone Rings
Materials
Platinum
Art Deco 0.95 CTW Old European Cut Diamond Platinum Bombay Heart Engagement Ring
Located in Philadelphia, PA
knife-edge shank
Stamped for platinum
Circa: 1925
Ring size: 5 1/2 and sizable
Measures north to south
Category
Vintage 1920s Art Deco Engagement Rings
Materials
Diamond, Platinum
Tiffany & Co. Platinum Round Brilliant Cut Diamond Setting Ring 1.18ct D/VS1 XXX
By Tiffany & Co.
Located in London, GB
A stunning platinum diamond solitaire ring by Tiffany & Co. from the Setting collection. The
Category
21st Century and Contemporary American Engagement Rings
Materials
Diamond, Platinum
GIA Certified Tiffany & Co. Platinum Radiant Cut Diamond Ring 2.01 Carat G/IF
By Tiffany & Co.
Located in London, GB
flawless) clarity. The knife edge engagement ring is set with 102 round brilliant cut diamonds weighing
Category
Late 20th Century American Solitaire Rings
Materials
Diamond, Platinum
Circa 1901 Edwardian Platinum GIA Certified 1.03 Ct Old European Cut Vintage
Located in Addison, TX
. Fashioned from platinum, the shank boasts a classic smooth finish that gradually transforms into a delicate
Category
Antique Early 1900s Edwardian Engagement Rings
Materials
White Diamond, Gold, Platinum
Axel Bros. Art Deco 1.35 Carats Old European Cut Diamond Platinum Stepped Ring
Located in Philadelphia, PA
total - eye clean and bright. Completed by fishtail profile and knife's edge shank. Tested as platinum
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, White Diamond, Platinum
3.55Ct Step Cut Burmese Peridot Diamond Cocktail Ring Platinum 18K Rose Filigree
Located in Lambertville , NJ
. The shank of the ring is also Platinum and is a knife edge band.
The ring is entirley crafted in
Category
2010s American Contemporary Cocktail Rings
Materials
Peridot, Diamond, 18k Gold, Platinum, Rose Gold
Platinum Diamond Vintage Engagement Ring, 900 Round Cut 1.18ctw
Located in Greensboro, NC
"Surprise the love of your life with her dream ring! Crafted in heirloom-quality 900 platinum, this
Category
21st Century and Contemporary More Rings
GIA Certified Art Deco 2.00 Ct. Old European Cut Engagement Ring in Platinum
Located in New York, NY
complete by diamond accented shoulders and a knife's edge band.
Diamond Details
Primary Stone: 2.00 ct
Category
Early 20th Century Unknown Art Deco Engagement Rings
Materials
Diamond, Platinum
Tiffany & Co. Knife Edge Wedding Band Ring Size H 1/2 (47)
By Tiffany & Co.
Located in London, GB
Tiffany's iconic 6 clawed mount atop a platinum knife edge band.
Condition: Used (Very Good)
Weight: 2.3
Category
21st Century and Contemporary Wedding Rings
Materials
Platinum
Tiffany & Co. Diamond Platinum Flower Ring
By Tiffany & Co.
Located in Boca Raton, FL
sparkling round cut prong set diamonds. The ring is signed by the designer with the platinum content.
Brand
Category
21st Century and Contemporary Modern Cluster Rings
Materials
Diamond, Platinum
Edwardian Seed Pearl, Diamond, and Platinum Choker Necklace
Located in New York, NY
the spiral's diamond set frame. Two knife-edged bards, one set with five single-cut diamond set leaf
Category
Early 20th Century Edwardian Choker Necklaces
Materials
Diamond, Pearl, Platinum
Edwardian Diamond Engagement Ring Platinum 2.25 Tcw.
Located in MIAMI, FL
Beautiful hand crafted platinum ring. The ring is from the Edwardian era and is as breathtaking
Category
Antique Late 19th Century Edwardian Engagement Rings
Materials
Diamond, Platinum
Tiffany & Co. Diamond Solitaire Engagement Ring Platinum .20ct H/Vs1
By Tiffany & Co.
Located in New York, NY
TIFFANY & CO. DIAMOND SOLITAIRE ENGAGEMENT RING PLATINUM .20CT E/VS1
This charming Tiffany & Co
Category
2010s Solitaire Rings
Materials
Diamond, Platinum
Tiffany & Co. Round Brilliant Diamond Platinum Solitaire Vintage Engagement Ring
By Tiffany & Co.
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 2.67 carats - H color with VS1 clarity
Set in a
Category
1990s Engagement Rings
Materials
Diamond, Platinum
Art Deco 0.75 Carat Diamond Platinum Geometric Engagement Ring
Located in Philadelphia, PA
and white
Completed by a knife edged shank
Stamped for platinum
Circa: 1930s
Ring Size: 4 1/4
Category
Vintage 1940s Art Deco Engagement Rings
Materials
Diamond, Platinum
Art Deco 0.60 Carat Diamond Platinum Engagement Ring
Located in Philadelphia, PA
. Terminating as pointed forms that transition into a subtle knife edged shank. Accented by single cut diamonds
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, White Diamond, Platinum
Mid-Century 1.58 Carats Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
Ring centers a round brilliant cut diamond weighing 1.36 carats total - J in color with VVS1
Category
Vintage 1950s Engagement Rings
Materials
Diamond, White Diamond, Platinum
Vintage Mid-Century .83ct Diamond Platinum Engagement Ring
Located in Scotts Valley, CA
Details:
Modern vintage with a sweet heart carved into the side of this Mid-Century 1940's Platinum
Category
Mid-20th Century Modernist Engagement Rings
Materials
Diamond, Platinum
Edwardian Aquamarine Diamond Platinum Topped Gold Link Bracelet
Located in Santa Rosa, CA
the use of platinum, is featured often on Edwardian jewelry. Its border of delicate balls and ridges
Category
Early 20th Century Unknown Edwardian Link Bracelets
Materials
Aquamarine, Diamond, 18k Gold, Platinum
Tiffany & Co. 1.29 Carats Diamond Platinum Solitaire Engagement Ring
By Tiffany & Co.
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 1.29 carats - I color with VS1 clarity
Set in a
Category
Early 2000s Contemporary Engagement Rings
Materials
Diamond, White Diamond, Platinum
Tiffany & Co. 1.38 Carats Diamond Platinum Solitaire Engagement Ring
By Tiffany & Co.
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 1.38 carats - G color with VS2 clarity
Set via
Category
Early 2000s Contemporary Engagement Rings
Materials
Diamond, White Diamond, Platinum
GIA Tiffany & Co. Contemporary 0.90 CTW Diamond Platinum Engagement Ring
By Tiffany & Co.
Located in Philadelphia, PA
Centering a round brilliant cut diamond weighing 0.90 carat - H color with VS1 clarity
Prong set in
Category
21st Century and Contemporary Solitaire Rings
Materials
White Diamond, Platinum
Tiffany & Co. 1.14 Carats Diamond Platinum Solitaire Engagement Ring GIA
By Tiffany & Co.
Located in Philadelphia, PA
Classic solitaire mounting with a stylized six prong head and knife edged shank. Centering a round
Category
Early 2000s Contemporary Engagement Rings
Materials
Diamond, White Diamond, Platinum
- 1
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Save "Platinum Knife Cut", and we’ll notify you when there are new listings in this category.
Platinum Knife Cut For Sale on 1stDibs
Find the exact platinum knife cut you’re shopping for in the variety available on 1stDibs. Every item for sale was constructed with extraordinary care, often using platinum, gold and 18k gold. You can easily find a 128 antique edition and 60 modern creations to choose from as well. Making the right choice when shopping for a platinum knife cut may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 19th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. There have been many well-made iterations of the classic platinum knife cut over the years, but those made by Tiffany & Co., ANGARA INC. and Roman Malakov are often thought to be among the most beautiful. Today, if you’re looking for an old european cut version of this piece and are unable to find the perfect match, our selection also includes round cut and brilliant cut alternatives. There aren’t many items for men if you’re seeking a platinum knife cut, as most of the options available are for women and unisex.
How Much is a Platinum Knife Cut?
On average, a platinum knife cut at 1stDibs sells for $7,033, while they’re typically $600 on the low end and $225,000 for the highest priced versions of this item.
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