Platinum 20 Diamonds
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Ruby Diamond Bezel Set Earring 1.20 Carat Platinum
By Harbor Diamonds
Located in New York, NY
Art Deco inspired bezel set earrings featuring vibrant red rubies weighing 1.20 carats crafted in platinum.
Harbor diamonds can mount your own diamonds or gemstone of choice.
Category
2010s Art Deco Stud Earrings
Materials
Ruby, Platinum
Edwardian Diamond Keshi South Sea Pearl Earrings Platinum
By Harbor Diamonds
Located in New York, NY
What's old is new again... These Edwardian bows were once a brooch and and redesigned into a fabulous pair of earrings. One the top of the bow I mounted two Keshi pearls with two Sou...
Category
Early 20th Century Edwardian Drop Earrings
Materials
Diamond, South Sea Pearl, Platinum
Vivid Diamonds GIA Certified 20.48 Carat Diamond Dangle Earrings
By Vivid Diamonds
Located in Miami, FL
Exquisite Vivid Diamonds Dangle Earrings crafted in Platinum showcasing two sensational GIA graded pear shape diamonds weighing 20.48 carats total, I-J color, VS2-SI1 clarity. The di...
Category
21st Century and Contemporary Modern Dangle Earrings
Materials
Diamond, Platinum
Diamond Platinum Necklace 20+ Carat
Located in Beverly Hills, CA
Make a serious entrance with this double strand Retro revival diamond platinum necklace. Featuring an opulent array of almost 23 carats in diamonds. The 176 round brilliant diamonds ...
Category
2010s Contemporary More Necklaces
Materials
Diamond, Platinum
Platinum 20 Carat Diamond Cluster Earrings
Located in New York, NY
This vintage Round, Marquise, Pear Cut Cluster Statement earrings are created with best quality sparkling diamonds. This is a must have earring for any of your special events. These ...
Category
20th Century Modern Clip-on Earrings
Materials
Diamond, Platinum
Vivid Diamonds 14.20 Carat GIA Fancy Light Yellow Diamond Engagement Ring
By Vivid Diamonds
Located in Miami, FL
This alluring three stone diamond engagement ring features a GIA graded 14.20ct fancy light yellow radiant cut diamond with VS2 clarity. This beautiful diamond has incredible saturat...
Category
21st Century and Contemporary Modern Three-Stone Rings
Materials
Diamond, White Diamond, Yellow Diamond, 18k Gold, Yellow Gold, Platinum
20 Carat Diamond Retro Platinum Brooch
Located in Coral Gables, FL
Important Retro brooch set with round and baguette cut diamonds weighing a total of approximately 20 carats (including 5 round diamonds over 0.75 carats each).
Category
Vintage 1940s Retro Brooches
Materials
Diamond, Platinum
2.20 Carat Diamond Platinum Engagement Ring
Located in New York, NY
Platinum engagement ring with center approx. 2.20ct old European cut diamond - LM/VS2, and two side tapered baguettes. Ring size - 6.5. Marked: Platinum. Weight - 6.2 grams.
Category
20th Century Engagement Rings
Materials
Diamond, Platinum
Tiffany & Co. Platinum 20 Carat Diamond Necklace
By Tiffany & Co.
Located in New York, NY
Tiffany & Co. Platinum 20 Carat Diamond Collar Necklace.
Set with round brilliant cut diamonds of amazing quality. Superb condition. Comes with a Tiffany box.
16 inches.
Category
20th Century Modern Necklace Enhancers
Materials
Diamond, Platinum
Mid-20th Century Diamond Platinum Bracelet
Located in New York, NY
This enticing platinum bracelet from the 1950s. features sparkling round, pear, baguette and marquise cut diamonds that weigh approximately 20.00ct. The color of the diamonds is F-H ...
Category
Mid-20th Century More Bracelets
Materials
Diamond, Platinum
.20 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 5
Metal Type: Platinum
Weight: 3.6 grams
Center Diamond Details
Shape: Old European Brilliant
Carat Weight: .20 carat
Color: I
Clarity: VS1
Side Stone Details:
Shape: ...
Category
Vintage 1920s Art Deco Engagement Rings
Materials
White Diamond, Platinum
Diamond Platinum Anniversary Style Ring, Band, 20 Diamonds, .2 Carat
Located in Milford, DE
An elegant ring, featuring two rows of ten 1mm diamonds each, for a total of 20 diamonds. Set in a finely crafted platinum band, which accentuates the diamonds' brilliant shine. Th...
Category
Late 20th Century Engagement Rings
Materials
Diamond, Platinum
Free Shipping
H 0.15 in. Dm 0.7 in.
.20 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Ring Size: 6
Metal Type: Platinum [Hallmarked, and Tested]
Weight: 3 grams
Center Diamond Details:
Weight: .20 carat
Cut: Old European Brilliant
Color: G
Clarity: VS
Side Diamond ...
Category
Vintage 1920s Art Deco Engagement Rings
Materials
White Diamond, Platinum
Estate 2.20 Carat Diamond Platinum Earrings
Located in Napoli, Italy
These Estate with a very contemporary taste diamond platinum earrings feature sparkling Round brilliant cut diamonds weighing approximately 2.20 carat. graded F-G color with VvS clar...
Category
Late 20th Century Contemporary Stud Earrings
Materials
Diamond, Platinum
Magnificent Tiffany & Co. 20 Carat Diamond Platinum Bracelet
By Tiffany & Co.
Located in Miami, FL
Tiffany & Co. platinum marquise diamond cluster bracelet containing 54 marquise cut diamonds weighing approximately 10.80cts F color VS clarity and 81 round brilliant cut diamond...
Category
20th Century Modern Bracelets
Materials
Diamond, White Diamond, Platinum
Platinum Chandelier Diamond Drop 20.00 Carat Earrings
Located in New York, NY
A pair of American Mid-20th Century platinum chandelier earrings with 20 carats worth of diamonds. The articulated earrings have 10 pear-cut diamonds, 8 round brilliant cuts, 20 marq...
Category
20th Century Modern Chandelier Earrings
Materials
Diamond, Platinum
0.80 Carat Diamond Platinum Seven-Stone Half Band Ring
By Diamond Stars Jewelry, Inc.
Located in New York, NY
Very Beautiful Half Diamond Band Ring
The ring is Platinum
There are 7 Round Cut Diamonds prong set
There are 0.80 Carats In Diamonds F/G SI
The ring is a size 8, sizable.
The ring w...
Category
20th Century Contemporary Band Rings
Materials
Diamond, White Diamond, Platinum
20.00 Carat Diamond Ornate Platinum Bangle Bracelet
Located in Sherman Oaks, CA
Features Round, Pear, and Marquis Cut Diamonds Ranging in Size from .05 ct - 1 ct
Total Diamond Weight = Approximately 20 carats
Average Color: G
Average Clarity: VS1 or better
Total...
Category
20th Century Bangles
Materials
Diamond, Platinum
Early 20th Century Double Diamond Platinum Ring
Located in New York, NY
This stunning platinum ring from the Art Deco era, is centered with two sparkling old mine cut diamonds with an approximate total weight of 2.50ct. Accentuating the center stones are...
Category
Early 20th Century Art Deco Cluster Rings
Materials
Diamond, Platinum
Aquamarine and Diamond Platinum Ring 20.00 Carat
By Poiray
Located in Wailea, HI
Aquamarine and Diamond Platinum Ring 20.00 carats
One Emerald Cut Cut Aquamarine weighing 20.00 carats [19.3 x 14.00 x 10.05] approximately [bright with no imperfections visible to ...
Category
Late 20th Century Fashion Rings
Materials
Aquamarine, White Diamond, Platinum
Vintage 2.20 Carat Diamond and Platinum Brooch
Located in Beverly Hills, CA
Hand created in the 1960s, this diamond and platinum brooch is a dazzler. Of a spray design with a double bow, it is set with approx. 1.75 carat of sparkling Round Brilliant and appr...
Category
Vintage 1960s Brooches
Materials
Diamond, Platinum
2.20 Carat Emerald Diamond Platinum Dangle Earrings
Located in Stamford, CT
1940's pear shaped Emerald and Diamond Platinum Dangle Earrings. Pierced post style. Random tested GIA certified Emerald 0.81 carat natural color minor F1 clarity enhancement only. ...
Category
Early 20th Century Dangle Earrings
Materials
Diamond, Emerald, Platinum
Platinum 4.20 Carat Princess Cut Diamond Eternity Band
Located in New York, NY
Platinum princess cut diamond eternity band crafted with 16 diamonds of F-G color, VS-SI clarity, size 6.25. Total carat weight 4.20cts. Ring width: 4.3mm.
Category
20th Century Modern Band Rings
Materials
Diamond, Platinum
Diamond Platinum Rubellite Ring 2.20 TCW Certified
Located in Brooklyn, NY
CERTIFIED $4,950 LADIES FINELY FACETED 2.20 TCW QUALITY RUBELITE TOURMALINE AND DIAMOND PLATINUM RING
TRULY A MAJESTIC PIECE OF JEWELRY!
Beautiful and Elegant Custom made Ring.
...
Category
2010s Modern Wedding Rings
Materials
Diamond, Rubelite, Platinum
1.20 Carat Sapphire and Diamond Platinum Ring
Located in New York, NY
Approximately 1.20 carat sapphire surrounded by a millegrain set halo of diamonds with pave diamonds down the shank set in platinum. Gross weight is approximately four grams.
Category
Vintage 1950s Engagement Rings
Materials
Diamond, Sapphire, Platinum
De Beers 1.20 Carat Diamond Platinum Ring
Located in Jesmond, Newcastle Upon Tyne
An impressive contemporary 1.20 carat De Beers diamond and platinum solitaire engagement ring; part of our diverse diamond jewelry and estate jewelry collections.
This fine and impr...
Category
Early 2000s Engagement Rings
Materials
Diamond, Platinum
1940s 1.20 Carat Diamond and Platinum Cocktail Ring
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive vintage 1.20 carat diamond and platinum cocktail ring; part of our diverse vintage jewelry and estate jewelry collections.
This fine and impressive 1.20 carat ...
Category
20th Century Engagement Rings
Materials
Diamond, Platinum
H 0.19 in. W 0.67 in. L 0.23 in.
Gorgeous 4.20 Carat Platinum Ruby Diamond Bracelet
By Sophia D
Located in New York, NY
This bracelet is designed with ruby stones with the total carat weight of 4.20 together with 1.97 beautiful diamond bracelet.
Category
2010s More Bracelets
Materials
Diamond, Ruby, Platinum
20th Century Sapphire Diamond Gold Platinum Earrings
Located in New York, NY
A stunning and bold pair of natural, no-heat sapphire briolette-cut drops suspended from a diamond-studded cap and mounting with alternating star shape and round bezel-set diamonds, ...
Category
Mid-20th Century Victorian Dangle Earrings
Materials
Blue Sapphire, White Diamond, Gold, Platinum
David Webb Platinum 20.17 Carat Chandelier Diamond Earrings
By David Webb
Located in New York, NY
A pair of American 20th Century platinum chandelier earrings with over 20 carat of diamonds by David Webb. The articulated earrings have marquise, round and a touch of baguette cut d...
Category
Mid-20th Century Modern Clip-on Earrings
Materials
Diamond, Platinum
4.20 Carat Diamond Solitaire Plus Platinum Ring
Located in Napoli, IT
Magnificent large Diamond solitaire ring
Crafted in Platinum - not marked
Semplicity in design to maximize the beauty of the centre old mine cushion cut Diamond 4.20 Ct in weight ra...
Category
Antique Early 1900s Edwardian Solitaire Rings
Materials
Diamond, Platinum
Antique Early 20th Century Platinum Diamond Pendant Earrings
Located in New York, NY
Early 20th Century platinum diamond earrings, circa 1910. These earrings are a pretty design, with a trefoil on top and two connecting dimensional loops on the bottom. They are set w...
Category
Early 20th Century Edwardian Drop Earrings
Materials
Diamond, Platinum
.20 Carat Total Weight Diamond Platinum Wedding Band
Located in Hicksville, NY
Item Details:
Ring Size: 6
Metal Type: Platinum [Tested]
Weight: 1.9 grams
Side Stone Details:
Shape: Old Single Cut
Total Carat Weight: .20 carat, total weight
Color: G
Clarity:...
Category
Vintage 1920s Art Deco Wedding Rings
Materials
White Diamond, Platinum
Platinum 2 Carat Diamond Propeller Brooch, Early 20th Century
Located in Lancashire, Oldham
A really lovely early 20th century long bar brooch made in the shape of a propeller. Superb crafted in platinum with a combination of pave set Old European and small round cut diamon...
Category
Early 20th Century Edwardian Brooches
Materials
Diamond, Platinum
.20 Carat Total Weight Diamond Platinum Wedding Band
Located in Hicksville, NY
Ring Size: 7.25
Metal Type: Platinum
Weight: 2.4 grams
Side Stone Details:
Shape: Antique Single Cut
Total Carat Weight: .20 carat, total weight
Color: E
Clarity: VS
Finger to ...
Category
Vintage 1910s Art Deco Band Rings
Materials
White Diamond, Platinum
.20 Carat Total Weight Platinum Diamond Wedding Band
Located in Hicksville, NY
Item Details:
Ring Size: 8.95
Metal Type: Platinum
Weight: 2.1 grams
Stone Details:
Shape: Antique Single Cut
Total Carat Weight: .20 Carat Total Weight
Color: F
Clarity: VS
Eng...
Category
Vintage 1930s Art Deco Wedding Rings
Materials
White Diamond, Platinum
.20 Carat Total Weight Diamond Platinum Wedding Band
Located in Hicksville, NY
Ring Size: 6
Metal Type: Platinum
Weight: 3.2 grams
Stone Details:
Shape: Old European Cut
Total Carat Weight: .20 carat total weight
Color: F
Clarity: VS
Finger to Top of Stone ...
Category
Vintage 1930s Art Deco Band Rings
Materials
White Diamond, Platinum
1.20 Carat Diamond Baguette Platinum Clip Post Earrings
Located in Stamford, CT
1950’s diamond clip post earrings. Graduated step cut baguette diamonds in platinum swirl style settings.
30 step cut baguettes, F-G VS approx. 1.20cts
Platinum
Stamped: PLAT
5.8...
Category
Mid-20th Century Lever-Back Earrings
Materials
Diamond, Platinum
GIA Certified 1.20 Carat Diamond Platinum Pendant Necklace
By FERRUCCI
Located in Lake Peekskill, NY
GIA Certified 1.20 Carat Diamond necklace pendant, K color, VVS1 clarity, in a bezel setting hand made and cable chain in platinum.
Length 18 inches adjustable to 16 inches.
Category
2010s Pendant Necklaces
Materials
White Diamond, Platinum
GIA Certified 1.20 Carat Diamond Halo Platinum Necklace
By FERRUCCI
Located in Lake Peekskill, NY
1.01 carat GIA Certified round brilliant cut diamond, H color, VS2 clarity, Platinum 950 diamond halo necklace, with a total diamond carat weight of 1.20 carat, with Platinum think c...
Category
2010s Pendant Necklaces
Materials
Diamond, Platinum
Antique Emerald 1.20 Carat Diamond Platinum Ring
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 0.57 carat emerald and 1.20 carat diamond, platinum dress ring; part of our diverse antique estate jewelry collections.
This stunning, fine a...
Category
Vintage 1920s Cocktail Rings
Materials
Diamond, Emerald, Platinum
H 0.2 in. W 0.45 in.
1.20 Carat Diamond Ruby Platinum Wedding Band Ring
Located in Stamford, CT
Diamond and ruby wedding band ring. 6 round full cut diamonds set in a platinum band setting with 36 round rubies.
6 Ideal full cut diamonds, approx. total weight .60cts, F, VS1
36 ...
Category
Late 20th Century Band Rings
Materials
Diamond, Ruby, Platinum
Tiffany & Co. Platinum 0.20 Carat Diamond Solitaire Necklace
By Tiffany & Co.
Located in Southampton, PA
The Tiffany & Co. Platinum 0.20 ct Diamond Solitaire Necklace is a classic, through and through. It is the kind of barely-there jewelry that won't lose its style and impact. This pie...
Category
21st Century and Contemporary Pendant Necklaces
Materials
Diamond, Platinum
Tiffany & Co. Platinum and .20 Carat Diamond Solitaire Engagement Ring
By Tiffany & Co.
Located in Brandford, CT
Tiffany & Co. Platinum and .20ct Diamond Solitaire Engagement Ring Size 5
Condition: Excellent Condition, Professionally Cleaned and Polished
Metal: Platinum
Weight: 4.6g
Diamond...
Category
Late 20th Century Engagement Rings
Materials
Diamond, Platinum
49.20 Carat Santa Maria Aquamarine Platinum Diamond Ring
Located in New York, NY
This bold and unique ring showcases a 49.20 carat Santa Maria color step-cut Aquamarine. Aquamarines with such an amazing color saturation and purity are extremely rare and have usua...
Category
Vintage 1970s Cocktail Rings
Materials
Aquamarine, Diamond, Platinum
Retro 3.20 Carat Diamond Platinum Floral Cluster Earrings
Located in Philadelphia, PA
Earrings are designed as floral clusters with winding foliate tendril extentions
Accented throughout by round brilliant and single cut diamonds
Weighing in total approximately 3.20...
Category
Vintage 1940s Retro Lever-Back Earrings
Materials
Diamond, White Diamond, Platinum
Tiffany & Co. Platinum 0.20 Carat Diamond Pendant Necklace
By Tiffany & Co.
Located in Southampton, PA
This Tiffany & Co. necklace is made of platinum and embellished with diamonds that amount to 0.20 carats. The necklace weighs 3.5 grams and boasts a 16” chain and a pendant that meas...
Category
21st Century and Contemporary Pendant Necklaces
Materials
Diamond, Platinum
Retro 2.20 Carat Diamond Platinum Engagement Ring GIA
Located in Philadelphia, PA
Centering a transitional cut diamond weighing 2.02 carats with H color and SI2 clarity
Basket set and flanked by bead set diamond shoulders
Accent old European cut diamonds weigh a...
Category
Vintage 1930s Retro Engagement Rings
Materials
Diamond, White Diamond, Platinum
French Diamond Platinum Solitaire Ring, 20th Century
Located in St. Catharines, ON
A beautiful French diamond platinum solitaire ring set with a .10 ct diamond, mounted in 18k white gold and platinum.
Paris, mid 20th century
size 5 ½.
Category
Vintage 1950s Solitaire Rings
Materials
Diamond, 18k Gold, White Gold, Platinum
Two Row 1.20 Carat Diamond Platinum Wedding Band
Located in Stamford, CT
Custom Made Platinum Two Row Diamond Wedding Band Set with ideal cut bright white sparkly diamonds 5MM Wide
24 round diamonds F VS full cut approximately 1.20 carats
Platinum
Stamp...
Category
2010s Wedding Rings
Materials
Diamond, Platinum
Mid-20th Century Geometric Panel Diamond Brooch in Platinum
Located in London, GB
A mid-20th Century geometric panel diamond brooch in platinum.
The brooch is designed as an openwork geometric panel composed of tapering scrolled and scalloped motifs, rubover-, gr...
Category
Mid-20th Century Brooches
Materials
Diamond, Platinum
Tiffany & Co. 1.20 Carat Diamond Platinum Engagement Ring
By Tiffany & Co.
Located in New York, NY
Sparkling oval brilliant cut engagement ring. Made and signed by TIFFANY & CO. The center stone is 1.20 cts. H-I color, VS1, very good symmetry, no fluorescence. One tapered di...
Category
Vintage 1970s Engagement Rings
Materials
Diamond, Platinum
20th Century Vegetal Turquoise and Diamonds Platinum Brooch
Located in SEVILLA, ES
Magnificent vegetal-style platinum brooch with natural turquoise cabochons and brilliant-cut diamonds. Weighing approximately 9 carats. Color and clarity, I - VS2. With two spikes. T...
Category
Vintage 1950s Contemporary Brooches
Materials
Turquoise, Diamond, Platinum
Platinum, Diamond and Ruby Earrings, Early 20th Century
Located in Aspen, CO
Burma rubles (24 natural bright red stones) are set in 18K yellow gold within the platinum earrings. These natural rubies weigh approximately .70 cts. The total diamond weight is a...
Category
Early 20th Century Art Deco Drop Earrings
Materials
White Diamond, Ruby, 18k Gold, Platinum
Stunning French 5.20 Carat Diamond Platinum Rare Bracelet
Located in Napoli, IT
Precious Twist
Early Art Deco period, bearing French Hallmarks for Platinum, this stunning bracelet is made of a myriad of precious twisted design links, connected with other ovals ...
Category
Vintage 1910s Art Deco Link Bracelets
Materials
Diamond, Platinum
Diamond Platinum Brooch
Located in Miami, FL
Center Stone is an Old European Cut Diamond Weighing Approximately 1.00 Carat, G Color, VS Clarity, Surrounded by 2.75 Carats of Old European Cut Diamonds, G Color, VS Clarity, Set i...
Category
20th Century Brooches
Materials
Diamond, Platinum
Diamond Platinum Earrings
Located in Miami, FL
Platinum Earrings Set with 2 Round Brilliant Chocolate Diamonds Weighing 2.32 Carats Surrounded by .78 Carats of Round Brilliant Cut Diamonds, G Color, VS Clarity.
Weight: 4.49 gr...
Category
20th Century Stud Earrings
Materials
Brown Diamond, Diamond, Platinum
1930s 1.20 Carat Total Diamond Platinum Engagement Ring
Located in Hicksville, NY
Item Details:
Metal type: Platinum
Weight: 5.53 grams
Ring Size: 7 (Resizable, currently has 3 indentations inside the shank for sizing purposes, easily removable)
Center Diamond ...
Category
Vintage 1930s Art Deco Engagement Rings
Materials
Diamond, Platinum
Mid-20th Century Diamond Sapphire Platinum Floral Ring
Located in Miami, FL
This Classic diamond blue sapphire flower engagement ring is crafted in platinum. Exposing a center bezel-set round-cut diamond weighing approx. 1.24 carats, graded J color, and SI2 ...
Category
Vintage 1950s Art Deco Engagement Rings
Materials
Diamond, Sapphire, Platinum
GIA Certified 1.20 Carat Diamond Platinum Engagement Ring
Located in Hicksville, NY
Item Details:
Ring Size: 6.5
Metal Type: Platinum
Weight: 3.6 grams
Center Diamond Details
GIA CERTIFIED Center Diamond - Certificate # 1196266432
Shape: Old European Cut
Carat ...
Category
Vintage 1920s Art Deco Engagement Rings
Materials
White Diamond, Platinum
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Platinum 20 Diamonds For Sale on 1stDibs
On 1stDibs, there are many options to choose from in our inventory of platinum 20 diamonds. All of the items for sale were constructed with extraordinary care, often using Platinum, Gold and 18k Gold. Our selection of items includes 3838 vintage examples as well as 116 contemporary versions. Our inventory is broad and distinctive, with accessories on offer that were made as long ago as the 20th Century to those produced as recently as the 21st Century. Art Deco and Modern are consistently popular styles when it comes to platinum 20 diamonds. Many examples in our inventory of these items are appealing no matter their origins, but David Webb, Tiffany & Co. And Cartier produced popular versions that are worth a look. There are many round cut, old european cut and emerald cut platinum 20 diamonds for sale. When shopping our range of platinum 20 diamonds, you’ll find that there are less available pieces for men today than there are for women.
How Much are Platinum 20 Diamonds?
Prices for platinum 20 diamonds start at $413 and top out at $4,450,000 with these rings, on average, selling for $9,781.
More Ways To Browse
White Gold Or Platinum And Diamond Band Ring
Edwardian Or Art Deco Diamond Cross
20 Carat Or More Diamond Tennis Braxelet
White Gold Or Platinum Rigid Necklace
Edwardian Three Or Five Star Diamond Ring
1 Carat Or Less Diamond Platinum Engagement Ring Below 3000
6 Diamonds
5 C Diamond
5 Diamond
2 Diamond
Diamond P
Diamond F