Skip to main content

Round 12 Carat Diamond Brooch

4
to
24
194
68
40
24
23
13
12
8
5
4
3
1
1
23
200
41
5
7
12
13
14
12
30
15
7
6
1
8
7
5
4
3
141
129
269
1
213
138
125
70
44
254
69
64
54
40
117
24
19
15
11
to
Sort By
12 Carat Diamond Broach in Platinum
Located in New York, NY
Gorgeous 12 carat diamond broach in platinum. The details are as follows : Diamond weight : 12
Category

2010s Brooches

Materials

Diamond, Platinum

David Webb Platinum & 18K Yellow Gold 12 Carat Diamond Crescent Brooch
By David Webb
Located in New York, NY
. This lovely brooch is set with round cut diamonds of approx. 12 carats. Brooch measures 2.25 inches.
Category

20th Century American Modern Brooches

Materials

Diamond, 18k Gold, Yellow Gold, Platinum

GIA Certified .12 Carat Diamond Amethyst Pearl Art Nouveau Butterfly Brooch
Located in Stamford, CT
1910 Art Nouveau butterfly brooch. 18k yellow gold with silver tops set with 12 rose cut diamonds
Category

Early 20th Century Brooches

Materials

Amethyst, Diamond, Pearl, Gold, 18k Gold, Yellow Gold, Silver

Antique 3.05 Carat Diamond and Ruby 12 Carat Yellow Gold Dolphin Brooch/Pendant
Located in Jesmond, Newcastle Upon Tyne
, 12 carat yellow gold and silver set dolphin brooch/pendant; part of our diverse collection of antique
Category

Antique 19th Century Unknown Victorian Brooches

Materials

Diamond, Ruby, Yellow Gold

Rose Gold Contemporary Peony Petal Brooch with 12 Diamonds
By Polya Medvedeva Jewellery
Located in Berlin, DE
This contemporary Peony Petal brooch is in 18 karat rose gold with 12 round natural diamonds, 0,15
Category

21st Century and Contemporary German Contemporary Brooches

Materials

White Diamond, Diamond, Yellow Gold, White Gold, Rose Gold, 18k Gold, Gold

.60 Carat Diamond Platinum Violin Pendant Brooch
Located in Stamford, CT
Three-dimensional violin brooch pendant in solid platinum with pave and channel set diamonds. 24
Category

21st Century and Contemporary Brooches

Materials

Diamond, Platinum

12 Ct Antique Platinum Brooch
Located in Chicago, IL
This antique brooch features round, marquise, and baguette shape diamonds weighing approximately 12
Category

Vintage 1920s Brooches

Materials

Platinum

Gianni Lazzaro Emerald 10, 12 Carat Diamond 18K White Gold Brooch for Her for Him
By Natkina
Located in Montreux, CH
Brooch White Gold 18 K Gianni Lazzaro Diamonds 129-.1,74ct.Gvs Diamond 2-0,40 ct Emerald 49
Category

21st Century and Contemporary Swiss Modern Brooches

Materials

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

18 Karat Yellow Gold Contemporary Peony Petal Brooch with 12 Diamonds
By Polya Medvedeva Jewellery
Located in Berlin, DE
This contemporary Peony Petal brooch is in 18 karat yellow gold with 12 round natural diamonds
Category

21st Century and Contemporary German Contemporary Brooches

Materials

Diamond, White Diamond, Gold, 18k Gold, Rose Gold, White Gold, Yellow Gold

18 Karat White Gold Contemporary Peony Petal Brooch with 12 Diamonds
By Polya Medvedeva Jewellery
Located in Berlin, DE
This contemporary Peony Petal brooch is in 18 karat white gold with 12 round natural diamonds, 0,15
Category

21st Century and Contemporary German Contemporary Brooches

Materials

Diamond, White Diamond, Gold, 18k Gold, Rose Gold, White Gold, Yellow Gold

2.20 Carat En Tremblant Diamond Two-Tone Gold Flower Brooch
Located in Stamford, CT
En Tremblant Large handmade solid 18k yellow and white gold diamond brooch. The leaves and flower
Category

Mid-20th Century Brooches

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Antique 2.25 Carat Diamond and Yellow Gold Brooch, circa 1890
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive 2.25 carat diamond, 12 karat yellow gold and silver set brooch
Category

Antique 1890s Brooches

Materials

Diamond, Yellow Gold

Antique 2.25 Carat Diamond and Yellow Gold Brooch, circa 1890
Antique 2.25 Carat Diamond and Yellow Gold Brooch, circa 1890
Free Shipping
H 0.28 in W 1.38 in L 1.22 in
Antique Ruby and Diamond 12 Karat Yellow Gold Pendant / Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 1.09 carat diamond and 1.62 carat ruby, 12 karat yellow
Category

Antique 1890s Brooches

Materials

Diamond, Ruby, Yellow Gold

Vintage 18K Gold 12 Point Buck Deer Brooch
Located in Santa Barbara, CA
-Century Year: 1960s Metal: 18k Yellow Gold Accent Gemstones & Diamonds: 1 round brilliant cut diamond
Category

Vintage 1960s Artisan Brooches

Materials

Diamond, Pink Sapphire, 18k Gold, Yellow Gold

Vintage 18K Gold 12 Point Buck Deer Brooch
Vintage 18K Gold 12 Point Buck Deer Brooch
Free Shipping
H 3 in W 0.75 in
Antique 1.17 Carat Diamond and Yellow Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 1.17 carat diamond, 12 karat yellow gold, platinum set brooch; part of our
Category

Vintage 1910s Unknown Brooches

Materials

Diamond, Yellow Gold, Platinum

Antique 1.17 Carat Diamond and Yellow Gold Brooch
Antique 1.17 Carat Diamond and Yellow Gold Brooch
Free Shipping
H 0.19 in W 0.36 in L 3.03 in
5.15 Carat Ruby Sapphire Diamond Opal Gold Silver Victorian Moth Brooch
Located in Stamford, CT
Mid 1880's Victorian moth Brooch. Set with rubies, diamonds, sapphires and opals in a 11-12 yellow
Category

Antique Late 19th Century Brooches

Materials

Sapphire, Blue Sapphire, Diamond, Opal, Ruby, Gold, Silver, Yellow Gold

Diamond Leaf Vintage Brooch
Located in New York, NY
baguette-cut diamonds totaling more than 12 carats, all set in glimmering 18-karat white gold. The
Category

Vintage 1960s Brooches

Materials

Diamond, 18k Gold, White Gold

Vintage Ben Rosenfeld Ruby and Diamond 18 Carat Gold Foliate Brooch
By Ben Rosenfeld
Located in London, GB
, totalling to an approximate weight of 1.20 carats and four round brilliant cut diamonds totalling to
Category

Vintage 1960s English Retro Brooches

Materials

Diamond, Ruby, Gold, 18k Gold, Yellow Gold

Butterfly Diamond and Ruby Brooch
Located in beverly hills, CA
with locking closure Diamond: 12 carats approximately Ruby: 2 carats approximately Measures: 1 1/2 x 2
Category

Mid-20th Century Brooches

Materials

Diamond, Ruby

Butterfly Diamond and Ruby Brooch
Butterfly Diamond and Ruby Brooch
Free Shipping
H 1.5 in W 2.5 in
Retro Platinum, Rose and Yellow Gold Peacock Brooch with 2.95 Carat Diamonds
Located in New York, NY
baguette cut diamonds. 3" x 1.25" 11 baguettes 0.30 carats 12 full cut diamonds 1.45 carats 66 single cut
Category

Vintage 1940s Retro Brooches

Materials

Diamond, Rose Gold, Yellow Gold, Platinum

Vintage Mixed-Cut Diamond Brooch
Located in New York, NY
a work of art. Details: 13.1 Carats of Diamonds Total Weight 12 Round-Cut Diamonds, VS clarity 8
Category

Vintage 1960s Brooches

Materials

Diamond, 18k Gold, White Gold

Large 23 Carat Vining Flowers Yellow Sapphire, Diamond and Tsavorite 18K Brooch
Located in Tustin, CA
white round brilliant diamonds have a combined approximate total weight of 2.52 carats. Approximately
Category

20th Century American Artisan Brooches

Materials

Diamond, Yellow Sapphire, Tsavorite, 18k Gold, White Gold, Yellow Gold

Ruby Emerald Diamond Lion Cub Brooch
Located in Stamford, CT
Lion cub 18k yellow gold brooch with ruby, emerald and white diamonds. Signed CF. Hand textured
Category

Mid-20th Century Unknown Brooches

Materials

Diamond, Emerald, Ruby, 18k Gold, Gold, Yellow Gold

14K Yellow Gold Diamond Butterfly Brooch
Located in Laguna Beach, CA
14k yellow gold brooch with diamonds. Tests 14k and weighs 8.4 grams. There are 12 round brilliant
Category

Mid-20th Century Brooches

Materials

Diamond, 14k Gold, Yellow Gold

14K Yellow Gold Diamond Butterfly Brooch
14K Yellow Gold Diamond Butterfly Brooch
Free Shipping
W 1.5 in L 1.5 in
Diamond Platinum Gold Leaf Brooch Set
Located in New York, NY
Set of two large leaf brooches, in 18k gold and platinum, set with a total of approx. 12 carats in
Category

20th Century Brooches

Materials

Diamond, Gold, Platinum

19k Gold and Diamond Leaf Brooch
By Aaron Henry
Located in Weston, MA
, set in 19k yellow gold and platinum. 2 ½ inches x 2 ¾ inches 12 round diamonds weighing a total of
Category

Late 20th Century Brooches

Materials

Diamond, Gold, Yellow Gold

19k Gold and Diamond Leaf Brooch
19k Gold and Diamond Leaf Brooch
Free Shipping
W 2.5 in L 2.75 in
Antique 1920s 2.27 Carat Aquamarine and Diamond Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
An impressive antique 1920s 2.27 carat aquamarine and 0.08 carat diamond, 12 karat yellow gold and
Category

Vintage 1920s Unknown Brooches

Materials

Aquamarine, Diamond, Gold, Yellow Gold

Harry Winston Diamond Brooch in Platinum
By Harry Winston
Located in New York, NY
diamonds with total weight of 12.72 carats, 12 round brilliant cut diamonds with total weight of 2.73
Category

Mid-20th Century American Artist Brooches

Materials

Diamond, Platinum

Midcentury Platinum Diamond Ruby Bird Brooch Set
Located in New York, NY
flowers. Adorned with a total of approximately 12 carats in round and baguette H/SI1 diamonds, ruby eyes
Category

20th Century Brooches

Materials

Diamond, Ruby, Platinum

Three Leaves Diamond White Gold Brooch
Located in New York, NY
comes in a creative three leaves design. The diamonds weigh approximately 12 carats, which is certain to
Category

Vintage 1980s Brooches

Materials

Diamond, 18k Gold, White Gold

Three Leaves Diamond White Gold Brooch
Three Leaves Diamond White Gold Brooch
Free Shipping
W 2 in L 2.13 in
Retro Ruby & Diamond Brooch
Located in Princeton, NJ
set in a platinum row with a single round old European cut diamond that weighs approx. .85 carats. It
Category

Vintage 1940s Unknown Retro Brooches

Materials

Diamond, Ruby, 14k Gold

Antique 9.12 Carat Garnet and Yellow Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 9.12 carat garnet and 12 karat yellow gold brooch; part of
Category

20th Century Brooches

Materials

Garnet, Yellow Gold

Antique 9.12 Carat Garnet and Yellow Gold Brooch
Antique 9.12 Carat Garnet and Yellow Gold Brooch
Free Shipping
H 0.2 in W 1.06 in L 2.8 in
Art Deco Platinum & Diamond Encrusted Pin/Fur Clips 12 CT / VS Quality Estate
Located in New York, NY
and unusual piece is made of 26 gm of platinum and encrusted with Approximately 12 carats of
Category

Vintage 1960s Brooches

Materials

Diamond, Platinum

1960's Diamond & Blue Sapphire Platinum Circle Pin Brooch
Located in Boca Raton, FL
1960's diamond and sapphire brooch handcrafted in platinum. The pin features 12 round brilliant cut
Category

Vintage 1960s Brooches

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

Vintage Pearl and Diamond 18k Yellow Gold Circle Brooch
Located in Beverly Hills, CA
One Vintage Pearl and Diamond 18k Yellow Gold Circle Brooch. Featuring 12 rosé pearls measuring
Category

Vintage 1970s Brooches

Materials

Diamond, White Diamond, Pearl, Gold, 18k Gold, Yellow Gold

Antique Art Deco Diamond Platinum Filigree Bar Brooch Pin
Located in Miami, FL
flanking round old European cut diamonds, weighing 1.00 carats, VS1 clarity, and six enchanting small
Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Platinum

1930s Diamond and Enamel 12k Yellow Gold Jockey Brooch
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.52 carat diamond and enamel, 12 karat yellow gold and silver set jockey
Category

Vintage 1930s Brooches

Materials

Diamond, Yellow Gold, Enamel

White Pink Diamond Two Birds Brooch
Located in New York, NY
Jewelry. White diamonds are: 12 baguette diamonds weighing 1.64 carats; 53 pear shape diamonds - 8.43
Category

21st Century and Contemporary American Brooches

Materials

White Diamond, Pink Diamond, 18k Gold, Rose Gold, White Gold

Trio Pearl Diamond Ruby Baroque Pearl Triple Bird Nest Brooch
By Trio
Located in Stamford, CT
Trio- Three birds nest brooch. circa 1960's with 3 3-D birds with pearl bodies, diamond heads and
Category

Mid-20th Century Brooches

Materials

Diamond, Pearl, Ruby, Gold, 14k Gold, Yellow Gold

Vintage Art Deco Diamond Brooch Pin
Located in Beverly Hills, CA
are 58 diamonds totaling 3.63 carats. 12 marquise weighing 2.30 carats and 48 round brilliants
Category

Early 20th Century Unknown Art Deco Brooches

Materials

Diamond, 14k Gold, White Gold

Vintage Art Deco Diamond Brooch Pin
Vintage Art Deco Diamond Brooch Pin
Free Shipping
H 2.37 in W 1.38 in
14 Karat Gold, Carved Opal, Cabochon Ruby and 1.20 Carat Diamond Clip-Brooch
Located in New York, NY
14 kt., one carved opal eagle ap. 50.0 x 53.2 mm., 12 round diamonds ap. 1.20 cts., 16 round
Category

Antique Late 19th Century American Brooches

Materials

Diamond, Ruby, 14k Gold

Vintage Tiffany & Co. Diamond Bow Brooch in 18k Yellow Gold
Located in Webster, NY
Vintage Tiffany & Co. Diamond brooch made in 18k yellow gold. Diamond Carat Weight: Approximately
Category

20th Century Brooches

Materials

Diamond, 18k Gold, Yellow Gold

Sabbadini Diamond & Ruby 18k Gold Bee Pin Brooch
By Sabbadini
Located in Boca Raton, FL
bezel, the center of each flower has a round cut diamond. It is a gorgeous pin and will certainly start
Category

21st Century and Contemporary Italian Modern Brooches

Materials

Diamond, Ruby, 18k Gold, White Gold, Yellow Gold

Sabbadini Diamond & Emerald 18k Gold Bee Pin Brooch
By Sabbadini
Located in Boca Raton, FL
bezel, the center of each flower has a round cut diamond. It is a gorgeous pin and will certainly start
Category

21st Century and Contemporary Italian Modern Brooches

Materials

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

Pair of Ruby and Diamond Butterfly Brooches, by Suzanne Belperron
By Suzanne Belperron
Located in London, GB
brooch is set with 1.35 carats approximately of round brilliant cut diamonds assessed as G colour, VS2
Category

Vintage 1950s French Retro Brooches

Materials

Diamond, Ruby, Platinum

Vintage 18k Yellow Gold Diamond Blue Enamel Face Pin Brooch
Located in Houston, TX
grams Ladies 18K yellow gold diamond vintage brooch. This Vintage brooch is handmade in Italy from 18K
Category

20th Century Brooches

Materials

Diamond, 18k Gold, Yellow Gold, Enamel

18K Two Tone Oversized Sapphire, Ruby, Emerald and Diamond Brooch
Located in New York, NY
approximately 250 round diamonds, 12 carats of oval cut rubies, 10 carats of oval cut blue sapphires, and about
Category

20th Century American Retro Brooches

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold

Vintage South Sea Pearl and 4.16ct Diamond Platinum Brooch Circa 1950
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive vintage South Sea pearl and 4.16 carat diamond, platinum and 12
Category

Vintage 1950s Brooches

Materials

Diamond, South Sea Pearl, Platinum

Vintage Platinum & Gold 3.0ctw Ruby & Diamond Open Circle Wreath Brooch Pin
Located in Montclair, NJ
--Stone(s):-- (12) Natural Genuine Diamond - Round Brilliant Cut - Prong Set - G/H Color - VS1/VS2
Category

21st Century and Contemporary Brooches

Materials

Diamond, Ruby, Gold, Platinum

18 Karat Rose Gold Brooch with Diamonds and Rubies, circa 1940s
Located in New York, NY
Retro brooch circa 1940's . Classically designed with round brilliant Diamonds and Rubies set in 18
Category

Vintage 1940s Unknown Retro Brooches

Materials

Diamond, Ruby, 18k Gold, Rose Gold

Platinum bar brooch set with sapphires and diamonds
Located in Braintree, GB
Vintage Platinum bar brooch set with calibre cut sapphires and round brilliant diamonds. Made in
Category

Vintage 1940s European Brooches

Materials

Diamond, Sapphire, Platinum

Turtle Brooch with Rubies & Diamonds in 18 Karat Yellow Gold
Located in Lucerne, CH
Presenting a playful turtle brooch with rubies and diamonds in 18 Karat yellow gold. A little baby
Category

Late 20th Century European Artist Brooches

Materials

Diamond, Emerald, Ruby, Gold, 18k Gold, Yellow Gold

14 Karat White Gold 1.36 CTW Diamond Brooch
Located in Solvang, CA
center round brilliant diamond at 0.46 carat with SI1 clarity and I color, four round brilliant diamonds
Category

Early 2000s Brooches

Materials

Diamond, 14k Gold, White Gold

French Made Ruby Emerald Sapphire and Diamond 18K Yellow Gold Brooch
Located in Chevy Chase, MD
breakdown: 12 Diamonds - 1.32 carats 187 Rubies - 22.92 carats 18 Sapphires - 5.00 carats 19 Emeralds
Category

Late 20th Century French Retro Brooches

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, Yellow Gold

Antique Art Deco Diamond Sapphire Platinum Pin Brooch
Located in Miami, FL
carats, graded H-I color, and VS2-SI clarity. Offset by two adjacent round-cut and 12 square cut genuine
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Blue Sapphire, Platinum

Vintage Diamond Blue Sapphire 18K White Gold Cluster Flower Brooch Pin
Located in Miami, FL
The Vintage Diamond Blue Sapphire 18K White Gold Flower Brooch, is the perfect enhancement for a
Category

Vintage 1980s Brooches

Materials

Diamond, Blue Sapphire, 18k Gold, White Gold

Antique 1.50Ct Ruby and 0.60Ct Diamond 12k Yellow Gold Flower Brooch Circa 1890
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 1.50 carat ruby and 0.60 carat diamond, 12 karat yellow gold and
Category

Antique 1890s Brooches

Materials

Diamond, Ruby, Yellow Gold, Silver

18k Yg Vintage Flower Translucent Blue & Green Textured Enamel & Diamond Brooch
Located in Los Angeles, CA
diamonds: 12 PCS carat total weight: APPROX 0.70CTW color: G clarity: VS brand: custom
Category

Late 20th Century Unknown Artisan Brooches

Materials

Diamond, 18k Gold, Yellow Gold, Enamel

Natural No Heat 3.82 Carat Sapphire Brooch in Silver and 9K Gold
Located in Miami, FL
Vintage Silver & 9K Gold Brooch with No Heat 3.82 Carat Cushion Sapphire Brooch & Sapphire Item
Category

21st Century and Contemporary Baroque Brooches

Materials

Diamond, Blue Sapphire, Gold, 9k Gold, Silver

Diamond and Ruby Platinum Setting Vintage Brooch Floral Design
Located in Miami, FL
with +- 13.8 CT. 12 Round Diamonds Vs1/Vs2 quality .10 each for a total of 1.2 CT. Total carat weight
Category

Late 20th Century French Brooches

Materials

Diamond, Ruby, Platinum

  • 1
Get Updated with New Arrivals
Save "Round 12 Carat Diamond Brooch", and we’ll notify you when there are new listings in this category.

Round 12 Carat Diamond Brooch For Sale on 1stDibs

Find the exact round 12 carat diamond brooch you’re shopping for in the variety available on 1stDibs. Each design created in this style — which was crafted with great care and often made from Gold, 18k Gold and Platinum — can elevate any look. You can easily find a 9 antique edition and 5 modern creations to choose from as well. Finding the perfect round 12 carat diamond brooch may mean sifting through those created during different time periods — you can find an early version that dates to the 19th Century and a newer variation that were made as recently as the 21st Century. For this particular accessory, there are many different carat weights to choose from, but versions are of considerable interest. There have been many well-made iterations of the classic round 12 carat diamond brooch over the years, but those made by Sophia D 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 alternatives. There aren’t many items for men if you’re seeking a round 12 carat diamond brooch, as most of the options available are for women and unisex.

How Much is a Round 12 Carat Diamond Brooch?

The price for a round 12 carat diamond brooch starts at $800 and tops out at $42,691 with these brooches, on average, selling for $9,450.

Finding the Right brooches for You

Antique and vintage brooches, which are decorative jewels traditionally pinned to garments and used to fasten pieces of clothing together where needed, have seen increasing popularity in recent years.

Given their long history, brooches have expectedly taken on a variety of different shapes and forms over time, with jewelers turning to assorted methods of ornamentation for these accessories, including enameling and the integration of pearls and gemstones.

Cameo brooches that originated during the Victorian age are characterized by a shell carved in raised relief that feature portraits of a woman’s profile, while 19th-century micromosaic brooches, comprising innumerable individually placed glass fragments, sometimes feature miniature depictions of a pastoral scene in daily Roman life.

At one time, brooches were symbols of wealth, made primarily from the finest metals and showcasing exquisite precious gemstones. Today, these jewels are inclusive and universal, and you don’t have to travel very far to find an admirer of brooches. They can be richly geometric in form, such as the ornate diamond pins dating from the Art Deco era, or designer-specific, such as the celebrated naturalistic works created by Tiffany & Co., the milk glass and gold confections crafted by Trifari or handmade vintage Chanel brooches of silk or laminated sheer fabric.

Brooches are versatile and adaptable. These decorative accessories can be worn in your hair, on hats, scarves and on the lower point of V-neck clothing. Pin a dazzling brooch to the lapel of your blazer-and-tee combo or add a cluster of smaller pins to your overcoat. And while brooches have their place in “mourning jewelry,” in that a mourning brooch is representative of your connection to a lost loved one, they’re widely seen as romantic and symbolic of love, so much so that a hardcore brooch enthusiast might advocate for brooches to be worn over the heart.

Today, find a wide variety of antique and vintage brooches on 1stDibs, including gold brooches, sapphire brooches and more.