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3 Carat Platinum

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Platinum Emerald & Diamond Earrings
Located in New York, NY
baguette and full-cut diamonds of a total of approximately 3 carats; platinum Size: length 2.25 inches
Category

Early 20th Century Art Deco Dangle Earrings

Materials

Diamond, Emerald, Platinum

Platinum Emerald Eternity Diamond Ring '3 3/4 Carat'
Located in San Francisco, CA
of 3.75 carat set in a ""U"" shape style prongs Product details: Center Gemstone Color: WHITE Side
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

3 Carats Diamonds Platinum Ring
Located in PARIS, FR
Ring trilogy in platinum 950 thousandths. set with 3 diamonds. of which a brilliant of
Category

20th Century French Engagement Rings

Materials

Diamond, Platinum

Platinum Martini 3 Prongs Natural Diamond Pendant '3/4 Carat'
Located in San Francisco, CA
This Classic Platinum Martini Style 3 Prongs Natural Diamond Pendant fetures an exceptional round
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum

Platinum Oval Eternity Diamond Ring '3 Carat'
Located in San Francisco, CA
3.00 carat set in a shared prongs ring Product details: Center Gemstone Color: WHITE Side Gemstone
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Briana Diamond Ring '1/3 Carat'
Located in San Francisco, CA
: ROUND Metal: Platinum Metal Weight: 2.2 Setting Type: Prong Shank Height: 2MM Shank Height: 2.6 Material
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

3 Carat Ruby and 1.2 Carat Diamond Platinum Ring
By Iris Fine Jewelry
Located in New York, NY
This stunning 3 carat Ruby and Diamond ring is a true statement piece that exudes elegance and
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Ruby, Gold, 18k Gold, White Gold, Platinum

3 Carat Round Brilliant Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
exquisite 14K Yellow Gold & Platinum Solitaire Engagement Ring adorned with a captivating 3.04
Category

2010s Italian Contemporary Three-Stone Rings

Materials

Diamond, Platinum

3 Carat Sapphire Diamond Platinum Ring
Located in New York, NY
This fabulous platinum ring ring is centered with a lovely emerald cut sapphire that weighs 3.00ct
Category

20th Century Cluster Rings

Materials

Sapphire, Diamond, Platinum

Platinum Three Prongs Diamond Tennis Bracelet '3 Carat'
Located in San Francisco, CA
Diamond Carat Weight: 3 Metal: Platinum Metal Weight: 18.88 Setting Type: Three Prong Material: NATURAL
Category

21st Century and Contemporary American Tennis Bracelets

Materials

Diamond, Platinum

Platinum Orchid Diamond Cluster Ring '3/4 Carat'
Located in San Francisco, CA
Gemstone Shape: ROUND Metal: Platinum Metal Weight: 2.69 Setting Type: Prong Shank Height: 4.7MM Shank
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Star Fashion Diamond Ring '2/3 Carat'
Located in San Francisco, CA
Gemstone Shape: ROUND Metal: Platinum Metal Weight: 4.73 Setting Type: Prong Shank Height: 7.8MM Shank
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Willow Fashion Diamond Ring '3/4 Carat'
Located in San Francisco, CA
Gemstone Type: NATURAL DIAMOND Side Gemstone Shape: ROUND Metal: Platinum Metal Weight: 3.29 Setting Type
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum 3 Carat Tapered Baguette Eternity Band
Located in Addison, TX
Platinum 3 Carat Tapered Baguette Eternity Band. The tapered baguette diamonds alternate up and
Category

21st Century and Contemporary Unknown Modern Fashion Rings

Materials

Diamond, Platinum

Platinum Martini 3 Prongs Natural Diamond Pendant '2 Carat'
Located in San Francisco, CA
This Classic Platinum Martini Style 3 Prongs Natural Diamond Pendant fetures an exceptional round
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum

Platinum Martini 3 Prongs Natural Diamond Pendant '1 Carat'
Located in San Francisco, CA
This Classic Platinum Martini Style 3 Prongs Natural Diamond Pendant fetures an exceptional round
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum

GIA Certified 3 Carat Round Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
Embrace the unparalleled allure of this exquisite GIA certified 3 carat round cut diamond platinum
Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified 3 Carat Emerald Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
Antinori Fine Jewels is proud to offer this important and impressive 3 carat GIA certified E Color
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

GIA Certified 3 Carat Heart Shape Pendant Platinum Necklace
By Antinori Fine Jewels
Located in Rome, IT
This exquisite platinum necklace features a GIA certified heart-shaped pendant, symbolizing love
Category

2010s Unknown Contemporary Pendant Necklaces

Materials

Diamond, White Diamond, Platinum

Platinum Shiran Two Rows Diamond Ring '1/3 Carat'
Located in San Francisco, CA
: ROUND Metal: Platinum Metal Weight: 3.29 Setting Type: Micro prong Shank Height: 3.2MM Shank Height
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Martini 3 Prongs Natural Diamond Pendant '1/2 Carat'
Located in San Francisco, CA
This Classic Platinum Martini Style 3 Prongs Natural Diamond Pendant fetures an exceptional round
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum

Le Ster 3 Carat Morganite Stud Earrings Platinum
Located in London, GB
version. MATERIALS Platinum Morganite (3 Carat)
Category

2010s European Art Deco Stud Earrings

Materials

Morganite, Platinum

Le Ster 3 Carat Morganite Stud Earrings Platinum
Le Ster 3 Carat Morganite Stud Earrings Platinum
Free Shipping
W 0.24 in L 0.36 in
GIA Certified 3 Carat Old Mine Cushion Diamond Platinum Studs
By Antinori Fine Jewels
Located in Rome, IT
an exquisite pair of GIA certified 3 carat old mine cut cushion diamond platinum studs full of
Category

2010s Italian Modern Clip-on Earrings

Materials

Diamond, White Diamond, Platinum

9.70 Carat Kunzite Diamond 3-Stone Platinum Ring
Located in Beverly Hills, CA
A timeless classic 3-stone platinum ring featuring a fine bright pink kunzite. The kunzite weighs
Category

21st Century and Contemporary North American Fashion Rings

Materials

Diamond, Kunzite, Platinum

Flawless GIA Certified 3 Carat Asscher Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
3 Carat Asscher cut Diamond shouldered by trapezoid diamonds on a platinum band. Accompanied by Gia
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Platinum Gold Four Prongs Natural Diamond Pendant '3/4 Carat'
Located in San Francisco, CA
: WHITE Center Gemstone Shape: ROUND Center Diamond Carat Weight: 0.7 Metal: Platinum Setting Type: 4
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum, Gold

1.00 Carat 3-Row Diamond Platinum Eternity Wedding Band Ring
Located in Stamford, CT
Diamond platinum eternity wedding band ring. 90 round brilliant cut pave set diamonds, on top
Category

Late 20th Century Band Rings

Materials

Diamond, Platinum

1.21 Carat Emerald Diamond 3-Stone Platinum Ring
Located in Beverly Hills, CA
A fine and luscious emerald weighing 1.21 carats takes center stage of this 3-stone ring. It has a
Category

21st Century and Contemporary American Fashion Rings

Materials

Emerald, Diamond, Platinum

3 Carat Round Diamond Engagement Ring in Platinum
By Hannah Florman
Located in Boston, MA
Customizable diamond engagement ring, shown with a GIA certified 3 carat round briliant diamond
Category

21st Century and Contemporary American Contemporary Engagement Rings

Materials

Diamond, Platinum

Platinum Flush Prong Set Diamond Eternity Ring '2/3 Carat'
Located in San Francisco, CA
This sparkling flush prong set diamond ring features round diamonds in platinum eternity ring. This
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum Heather 2 Rows Interweave Diamond Ring '1/3 Carat'
Located in San Francisco, CA
Gemstone Shape: ROUND Metal: Platinum Metal Weight: 3.66 Setting Type: Micro prong Shank Height: 4MM Shank
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

Platinum 3 Stone, 1.63 Carat Ruby and .61 Carat Diamond Ring
By Cellini
Located in New York, NY
Classic 3 stone platinum ring. This ring centers a round brilliant diamond weighing 0.61 carats
Category

Vintage 1980s American Contemporary Bridal Rings

Materials

Diamond, Ruby, Platinum

Tiffany & Co. 3 Carat Round Brilliant Cut Diamond Platinum Ring
By Tiffany & Co.
Located in Rome, IT
Tiffany & Co. 3.08 ct Platinum Round Brilliant Cut Diamond Solitaire Engagement Ring. The ring
Category

2010s American Modern Engagement Rings

Materials

Diamond, Platinum

Platinum Martini 3 Prongs Natural Diamond Pendant '1 1/2 Carat'
Located in San Francisco, CA
This Classic Platinum Martini Style 3 Prongs Natural Diamond Pendant fetures an exceptional round
Category

21st Century and Contemporary American Pendant Necklaces

Materials

Diamond, Platinum

Art Deco 3 Carat Sapphire and Diamond Platinum Filigree Ring
Located in Montgomery, AL
carats. The platinum setting features one diamond north and south of the center sapphire. These two
Category

Early 20th Century Art Deco Cocktail Rings

Materials

Diamond, White Diamond, Sapphire, Blue Sapphire, Platinum

Platinum Shayna Petite Design Round Diamond Ring 'Center 1/3 Carat'
Located in San Francisco, CA
This petite handcrafted earthy, organically designed ring features a 1/3 carat center round cut
Category

21st Century and Contemporary American Band Rings

Materials

Diamond, Platinum

GIA Certified 3 Carat Unheated Red Spinel Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
Behold the allure of an exceptional and one-of-a-kind natural spinel, graced with a captivating rich red hue that radiates with lively brilliance. This remarkable gem showcases an id...
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Spinel, Platinum

Edwardian Platinum 1.00 Carat Sapphire and Diamond 3-Stone Ring
Located in Narberth, PA
piece is crafted in solid platinum and features a sapphire center with two sparkling diamonds resting on
Category

Vintage 1910s Unknown Edwardian Three-Stone Rings

Materials

Diamond, Blue Sapphire, Platinum

GIA Certified 3/4 Carat Asscher Cut Platinum Pendant
By Lili Jewelry
Located in New York, NY
3/4 ct Diamond set in 4 prong low basket. 18" platinum chain with a safety lock. Diamond GIA
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Filigree Deco Platinum 3 Carat Tw Diamond Pin GIA
Located in Big Bend, WI
Art Deco platinum diamond filigree pin brooch with just over 3 carats of diamonds. This is a large
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Platinum

Filigree Deco Platinum 3 Carat Tw Diamond Pin GIA
Filigree Deco Platinum 3 Carat Tw Diamond Pin GIA
Free Shipping
W 0.63 in L 3.125 in
3 Carat GIA Radiant Cut Diamond Engagement Platinum Ring
By Diamond Scene
Located in New York, NY
A beautiful radiant cut diamond set in a timeless custom made mounting. 3.18 carat center H VS1
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Platinum

10.44 Carat Rubellite Tourmaline Diamond Platinum 3-Stone Ring
Located in Beverly Hills, CA
10.44 Carat Rubellite Tourmaline Diamond Platinum 3-Stone Ring A juicy and vibrant rubellite
Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Rubelite, Tourmaline, Platinum

2.08 Carat Pink Sapphire Diamond 3-Stone Platinum Ring
Located in Beverly Hills, CA
A classic stylish 3-stone gemstone platinum ring featuring a fine vivid pink sapphire! The sapphire
Category

21st Century and Contemporary American Fashion Rings

Materials

Diamond, Pink Sapphire, Platinum

GIA Certified 3/4 Carat Asscher Cut Platinum Pendant
By Lili Jewelry
Located in New York, NY
3/4 ct Diamond set in 4 prong low basket. 18" platinum chain with a safety lock. Diamond GIA
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Platinum

GIA Certified 3/4 Carat Cushion Cut Platinum Pendant
By Lili Jewelry
Located in New York, NY
3/4 ct Diamond set in 4 prong low basket. 18" platinum chain with a safety lock. Diamond quality
Category

21st Century and Contemporary American Contemporary Pendant Necklaces

Materials

Diamond, Platinum

Platinum 3 Stone Emerald Cut 2.25 Carats Diamonds Ring
Located in Miami, FL
Offered here is an elegant three stones ring, handmade in noble 950 platinum. Centered with a 1.01
Category

2010s North American Contemporary Engagement Rings

Materials

Diamond, Platinum

Exquisite 3 Carats Colombian Emerald and Diamond Platinum Necklace
Located in London, GB
offset by a delicate briolette diamond underneath, which is suspended from the pendant's platinum setting
Category

21st Century and Contemporary British Art Deco Pendant Necklaces

Materials

Diamond, Emerald, Platinum

3 Carat Diamond and Sapphire Ribbon Platinum Brooch. Circa 1930
Located in Bay Harbor Islands, FL
total weight of 3 carats. Circa 1930's Metal Type: Platinum (stamped and/or tested) Metal Weight: 9.6
Category

Vintage 1930s Brooches

Materials

Diamond, Platinum

Unheated 3 Stone Sapphire Ring, 5.07 Carat Platinum 950 GIA Certified x 3
Located in Tampa, FL
this classic 3 stone platinum 950 diamond ring, set with two GIA certified cushion cut diamonds, each
Category

2010s Unknown Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Scarselli 18k & Platinum Earrings 3 Carat Fancy Intense Yellow Each GIA
By SCARSELLI
Located in New York, NY
From the outstanding Scarselli's Intense Yellow diamonds collection, these matching radiant cut 3
Category

2010s American Contemporary Dangle Earrings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

3 Carat Pear Cut Tapered Baguette Diamond Platinum 18k Gold Ring
By Antinori Fine Jewels
Located in Rome, IT
exquisite 3-carat pear cut emerald captures the essence of elegance and sophistication, radiating vibrant
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Emerald, 18k Gold, Yellow Gold, Platinum

GIA Certified 3 Carat Round Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
diamond encrusted setting, this ring is a head turner! Highlights: - Large 3.05 carat center diamond
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold, Gold

Tiffany & Co. IDEAL CUT 3 Carat Round Brilliant Cut Diamond Platinum Ring
By Tiffany & Co.
Located in Rome, IT
Tiffany & Co. 3 Carat Round Brilliant Cut Diamond Platinum Ring This Tiffany & Co. Diamond
Category

2010s American Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Tacori Platinum 3 Carat Round Pear Shape Diamond Wedding Ring
By Tacori
Located in New York, NY
Tacori Platinum 3 Carat Round Pear Shape Diamond Wedding Ring Luxurious in every way, this ring is
Category

2010s American Romantic Three-Stone Rings

Materials

Diamond, Platinum

2.19 Carat 3 Stone Diamond Engagement Ring Platinum in Stock
Located in Boca Raton, FL
Platinum 2.19ctw 3 Stone Diamond Engagement Ring This platinum round brilliant diamond engagement
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, Platinum

1.43 Carat 'total weight' Radiant Cut Diamond 3-Stone Channel Ring in Platinum
Located in Palm Beach, FL
1.43 Carat (total weight) Princess Cut Diamond Three-Stone Channel Ring set in Platinum. Diamonds
Category

20th Century Three-Stone Rings

Materials

Diamond, Platinum

Scarselli 3 carat VIVID Yellow Radiant Cut Diamond Platinum Engagement Ring
By SCARSELLI
Located in New York, NY
From the collection of Scarselli, this exceptional 3.05 carat Radiant Cut Natural Fancy vivid
Category

2010s American Contemporary Engagement Rings

Materials

White Diamond, Yellow Diamond, Diamond, 18k Gold, Platinum

Antique Art Deco 3 Carat Diamond and Platinum Drop Earrings
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive pair of Art Deco 3 carat diamond and platinum drop earrings; part
Category

20th Century Unknown Art Deco Drop Earrings

Materials

Diamond, Platinum

GIA Certified 3 Carat E Color Square Emerald Cut Diamond Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
A gorgeus ring featuring a 3 carat square emerald cut diamond, according to the GIA report is G
Category

2010s Unknown Modern Solitaire Rings

Materials

Emerald, Diamond, White Diamond, Platinum

Circa 1920s Art Deco 3 Carat Emerald and 5.2 Carat Diamond Platinum Bracelet
Located in Atlanta, GA
carats of old european cut diamonds and 3 carats of emeralds. What a gorgeous statement bracelet
Category

Vintage 1920s Art Deco More Bracelets

Materials

Diamond, Emerald, Platinum

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3 Carat Platinum For Sale on 1stDibs

Find the exact piece of 3 carat platinum 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. Find an antique version now, or shop for 8207 vintage or 3759 modern creation for a more contemporary example of these cherished accessories. You’re likely to find the perfect item from our selection of 3 carat platinum among the distinctive items we have available, which includes versions made as long ago as the 18th Century as well as those produced as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but .5 carat and 1 carat versions are of considerable interest. There have been many well-made iterations of the classic choice in our collection of 3 carat platinum over the years, but those made by LB Exclusive, Tiffany & Co. and Shreve, Crump & Low are often thought to be among the most beautiful. Today, if you’re looking for a round cut version of this piece and are unable to find the perfect match, our selection also includes old european cut and emerald cut alternatives. Finding an object in our assortment of 3 carat platinum for sale for women should be easy, but there are 2850 pieces available to browse for unisex as well as men, too.

How Much is a 3 Carat Platinum?

Prices for a piece of 3 carat platinum can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1 and can go as high as $4,810,000, while this accessory, on average, fetches $7,155.
Questions About 3 Carat Platinum
  • 1stDibs ExpertSeptember 28, 2021
    A 3-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 3-carat diamond could cost you between $7,200 to $51,000. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 3-carat diamond jewelry today.
  • 1stDibs ExpertFebruary 27, 2024
    In terms of dimensions, how large a 3-carat diamond is varies. The shape of the diamond will determine its length and width. Weighing 600 milligrams, diamonds that are 3 carats are generally considered to be large stones. On 1stDibs, shop a large collection of diamond jewelry from some of the world's top dealers.
  • 1stDibs ExpertFebruary 13, 2023
    Whether a 3-carat diamond is considered big is largely a matter of personal opinion. The average diamond is 1 to 2 carats in size. On 1stDibs, shop a selection of diamond jewelry.