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Square Diamonds and Sapphire Brooch
Located in New York, NY
The brooch is finely crafted in platinum with diamonds weighing approximately 1.50 carat and
Category

Vintage 1950s American Brooches

Materials

Diamond, Sapphire, Platinum

Sapphire Diamond Leaf Brooch
Located in New York, NY
Sapphire diamond leaf brooch Invisible square-cut sapphires of 24.58 carats, emerald-cut diamonds
Category

Late 20th Century Brooches

Materials

Diamond, Sapphire, 18k Gold, White Gold

Sapphire Diamond Leaf Brooch
Sapphire Diamond Leaf Brooch
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W 1.75 in L 1.13 in
18K yellow Gold Diamond, Turquoise & Sapphire 2 inch Square Brooch
Located in Birmingham, AL
This is a beautiful and so unique brooch! It is made in 18K yellow Gold, measures 2 inches square
Category

Late 20th Century Art Deco Brooches

Materials

Diamond, Sapphire, Turquoise, Yellow Gold

Emerald and Diamond Bow Brooch, Platinum
Located in New York, NY
An Emerald and Diamond Bow Brooch made in Platinum. Set with a square emerald, weighing appx. 0.60
Category

20th Century Brooches

Materials

Diamond, Emerald, Platinum

Sapphires Diamond Brooch 18 Karat White Gold Bow Design Brooch
Located in Jupiter, FL
Unique hand crafted sapphire and diamond brooch made in 18KT white gold with stunning royal blue
Category

Late 20th Century Brooches

Materials

Diamond, Sapphire, 18k Gold, White Gold

Mystery Set Ruby, Diamond Brooch
Located in New York, NY
MYSTERY set ruby, diamond and crystal brooch in 18k yellow gold. Equipped with double pin and
Category

Late 20th Century European Artist Brooches

Materials

Crystal, Diamond, Ruby, 18k Gold

Mystery Set Ruby, Diamond Brooch
Mystery Set Ruby, Diamond Brooch
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H 2.8 in W 2.13 in
Edwardian Peridot and Diamond Platinum Brooch
Located in Banbury, GB
An Edwardian peridot and diamond brooch, of quatrefoil design, centered with a square-shaped
Category

Antique Early 1900s British Edwardian Brooches

Materials

Diamond, Peridot, Platinum

Edwardian Peridot and Diamond Platinum Brooch
Edwardian Peridot and Diamond Platinum Brooch
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W 1.19 in L 1.19 in
Art Deco 0.75ct Diamond Brooch, c.1920s
Located in London, GB
diamonds can be seen on almost every of this brooch, making the piece glisten. Ranging in size these
Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Platinum

Diamond White and Yellow Gold 18K Brooch
Located in Geneva, CH
Diamond White and Yellow Gold 18K Brooch. Set by one diamond square cut estimated 0.22 carat.
Category

21st Century and Contemporary Brooches

Materials

Diamond, 18k Gold, White Gold, Yellow Gold

Invisible Set Ruby and Diamond Tulip Brooch
Located in New York, NY
carats, Square and Round cut Diamonds weighing approximately a total of 10.00 carats. Circa 1980s
Category

Vintage 1980s Brooches

Materials

Diamond, Ruby, 18k Gold

Diamond and Iolite Gold Bowtie Brooch
Located in Monte Carlo, MC
Classy square Iolite and diamond bowtie brooch. Diamond: ± 2 carat G VS or better 18kt Gold
Category

Late 20th Century Italian Modern Brooches

Materials

Diamond, Iolite, 18k Gold, Yellow Gold, Gold

Diamond and Iolite Gold Bowtie Brooch
Diamond and Iolite Gold Bowtie Brooch
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W 1.19 in L 2.09 in
Cartier Retro Blue Sapphire Diamond Brooch Pin
By Cartier
Located in New York, NY
Retro 14k gold brooch by Cartier, with 5 blue sapphires and approx. 0.10ctw in diamonds. Brooch
Category

20th Century French Retro Brooches

Materials

Diamond, Blue Sapphire

Invisible Set Ruby Diamond Gold Pansy Brooch Pin
Located in New York, NY
18k white gold pansy flower brooch, with invisible set rubies and approx. 1.40ctw in diamonds
Category

20th Century Brooches

Materials

Diamond, Ruby, Gold

Alexis Invisible Set Sapphire Diamond Gold Feather Brooch
Located in New York, NY
and 2.06ctw in diamonds. Brooch measures 3.75" x 1". Marked: Alexis 5001. Weight - 22.6 grams.
Category

21st Century and Contemporary Brooches

Materials

Diamond, Sapphire, Gold

Antique Ruby and Diamond Yellow Gold Pin Brooch
Located in Jesmond, Newcastle Upon Tyne
the feature setting. This ruby and diamond brooch is supplied with an independent diamond grading
Category

Antique 1890s Unknown Brooches

Materials

Diamond, Ruby, 9k Gold, Yellow Gold

Antique Ruby and Diamond Yellow Gold Pin Brooch
Antique Ruby and Diamond Yellow Gold Pin Brooch
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H 0.08 in W 0.67 in L 0.72 in
Boucheron Citrine Diamond Brooch
By Boucheron
Located in New York, NY
Boucheron citrine diamond brooch Square shaped cabochon citrines and square-cut diamonds; marked
Category

Late 20th Century Brooches

Materials

Citrine, Diamond

Boucheron Citrine Diamond Brooch
Boucheron Citrine Diamond Brooch
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W 2.31 in L 1.75 in
Yellow Gold Diamond, Sapphire and Ruby Ladybird Brooch
Located in London, GB
An 18k yellow gold Ladybird brooch. The brooch is set with 4 cabochon rubies throughout the wings
Category

21st Century and Contemporary Brooches

Materials

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

1930s Green Tourmaline Diamond 14k Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
settings. The antique brooch is ornamented with seven impressive collet set square faceted cut green
Category

20th Century Brooches

Materials

Diamond, Tourmaline, Yellow Gold, 14k Gold

1930s Green Tourmaline Diamond 14k Yellow Gold Bar Brooch
1930s Green Tourmaline Diamond 14k Yellow Gold Bar Brooch
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H 0.17 in W 0.23 in L 2.17 in
Retro Rose Yellow White Gold Citrine Diamond Bow Brooch
Located in New York, NY
, and approx. 0.18ctw in diamonds. Brooch is 75mm x 38mm. Marked 14k. Weight - 18.6 grams.
Category

20th Century Brooches

Materials

Citrine, Diamond, White Gold

Boucheron Paris Retro Invisible Set Sapphire Diamond Gold Brooch
By Boucheron
Located in New York, NY
. 0.80ctw G/VS diamonds. Brooch measures 1 3/8" x 0.75". Marked Boucheron Paris, French eagle marks. Comes
Category

Vintage 1950s French Retro Brooches

Materials

Diamond, Sapphire, Gold

Ruby and Diamond Poppy Flower Brooch / Pendant in 18k
Located in New York, NY
Ruby and diamond Poppy Flower brooch / pendant in 18k white gold. The brooch features poppy flower
Category

21st Century and Contemporary European Artist Brooches

Materials

Diamond, Ruby

Vintage Ruby Onyx and Diamond Classic Car Brooch
Located in London, GB
Here we have a superb vintage brooch. The piece has been crafted from 18ct yellow gold into the
Category

Vintage 1930s Brooches

Materials

Diamond, Onyx, Ruby, Gold, Yellow Gold, Enamel

Retro Blue and Yellow Sapphire Diamond Gold Brooch
Located in New York, NY
approx. 25 carats of colored sapphires with two round cut diamonds at the base of the brooch. True period
Category

Vintage 1940s Brooches

Materials

Diamond, Blue Sapphire, Yellow Sapphire, Gold, 14k Gold

Adorable Oscar Heyman Carved Ruby Diamond Platinum Bird Brooch
By Oscar Heyman
Located in New York, NY
.0.85ctw FG/VS diamonds. Brooch measures 1 3/16" x 7/8". Hallmarked 980 91 serial number. Weight of the
Category

20th Century North American Brooches

Materials

Diamond, Onyx, Ruby, Platinum

Magnificent French Invisible Set Ruby Diamond Gold Rose Flower Brooch
Located in New York, NY
approx. 1.00ctw G/VS diamonds. Brooch is 3.5" x 1.25". Marked with gold assay marks on the stem. Weight
Category

20th Century French Brooches

Materials

Diamond, Ruby, Gold

Exquisite French Invisible Set Sapphire Diamond Gold Rose Flower Brooch
Located in New York, NY
and approx. 1.00ctw G/VS diamonds. Brooch is 3.5" x 1.25". Marked with gold assay marks on the stem
Category

20th Century French Brooches

Materials

Diamond, Sapphire, Gold

Magnificent French Invisible Set Emerald Diamond Gold Rose Flower Brooch
Located in New York, NY
approx. 1.00ctw G/VS diamonds. Brooch is 3.5" x 1.25". Marked with gold assay marks on the stem. Weight
Category

20th Century French Brooches

Materials

Diamond, Emerald, Gold

Vintage French 1.70 Carat Emerald Diamond 18K Yellow Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
fine yellow gold diamond emerald brooch. Emerald Quality Cut Square/Rectangular/Cabochon Content 1.70
Category

Vintage 1940s French Brooches

Materials

Diamond, Emerald, Yellow Gold

.20 Carat Ruby Diamond Yellow Gold Horseshoe Brooch
Located in Stamford, CT
Early 1900's horseshoe brooch set with 15 square cut rubies and 12 rose cut diamonds. Fold up
Category

Early 20th Century Brooches

Materials

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

Sabbadini Large Mystery Set Sapphire Diamond Flower Brooch Pin
By Sabaddini
Located in Miami, FL
This outstanding Collectable flower brooch pin was designed by Sabbadini, Italy. It is handcrafted
Category

Late 20th Century Italian Modern Brooches

Materials

Diamond, Sapphire, 18k Gold

Sabbadini Large Mystery Set Sapphire Diamond Flower Brooch Pin
Sabbadini Large Mystery Set Sapphire Diamond Flower Brooch Pin
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H 1.42 in W 2.01 in D 19.73 in
1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
An impressive pearl and 0.55 carat ruby, 0.30 carat diamond and 12 karat yellow gold brooch; part
Category

Vintage 1910s Unknown Art Deco Brooches

Materials

Diamond, Pearl, Ruby, Yellow Gold, Platinum

1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch
1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch
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H 0.2 in W 0.89 in L 0.91 in
Antique Victorian Ruby and Diamond Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
gold and platinum. The brooch is supplied with an independent diamond grading report card. Images do
Category

Antique 1890s Unknown Victorian Brooches

Materials

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

Antique Victorian Ruby and Diamond Yellow Gold Bar Brooch
Antique Victorian Ruby and Diamond Yellow Gold Bar Brooch
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H 0.29 in W 0.91 in L 1.73 in
Antique 0.24Ct Sapphire and 0.12Ct Diamond Platinum Pin Brooch Circa 1930
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive antique 1930s 0.24 carat sapphire and 0.12 carat diamond, platinum pin brooch
Category

Vintage 1930s Brooches

Materials

Diamond, Sapphire, White Gold, Platinum

1940s 18k Gold Retro Sapphire and Diamond Clip Brooch
Located in Idar-Oberstein, DE
A very sleek and elegant Sapphire and Diamond Clip Brooch made in the 1940s, depicting the typical
Category

Vintage 1940s Unknown Retro Brooches

Materials

Diamond, Blue Sapphire, 18k Gold

1940s 18k Gold Retro Sapphire and Diamond Clip Brooch
1940s 18k Gold Retro Sapphire and Diamond Clip Brooch
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H 0.4 in W 0.87 in L 1.74 in
Butterfly Diamond and Ruby Brooch
Located in beverly hills, CA
square cut rubies. The thorax and abdomen are formed of larger round cut diamonds weighing approximately
Category

Mid-20th Century Brooches

Materials

Diamond, Ruby

Butterfly Diamond and Ruby Brooch
Butterfly Diamond and Ruby Brooch
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H 1.5 in W 2.5 in
Impressive Green Tourmaline & Diamond Brooch
Located in New York, NY
Tourmaline & Diamond Brooch Mounted in Platinum Approximate weights: Emerald cut Green tourmaline
Category

Vintage 1960s Brooches

Materials

Tourmaline, Diamond, White Gold

Seaman Schepps Aquamarine, Diamond Brooch
By Seaman Schepps
Located in New York, NY
Seaman Schepps aquamarine, diamond and" synthetic ruby" brooch in platinum and base metal. Circa
Category

Mid-20th Century American Retro Brooches

Materials

Aquamarine, Diamond, Platinum

Seaman Schepps Aquamarine, Diamond Brooch
Seaman Schepps Aquamarine, Diamond Brooch
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H 2.05 in W 1.5 in
Antique 1920s 6 Carat Ruby and 1.31 Carat Diamond Platinum Bow Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning antique 6 carat Burmese ruby and 1.31 carat diamond, platinum bow brooch; part of our
Category

Vintage 1920s Unknown Brooches

Materials

Diamond, Ruby, Platinum

Blue Sapphire and White Diamond Leaf Brooch in 18K Yellow Gold
Located in Los Angeles, CA
Beautifully crafted blue sapphire square and white diamond round brooch in a shape of a leaf
Category

21st Century and Contemporary Brooches

Materials

White Diamond, Blue Sapphire, Yellow Gold

Columbian Emerald, Diamond and Onyx Art Deco Brooch, ca. 1920s
Located in Idar-Oberstein, DE
An emerald, diamond and onyx Art Deco brooch, ca. 1920, in platinum. The facetted square emerald
Category

Vintage 1920s Swedish Art Deco Brooches

Materials

Diamond, Emerald, Onyx, Platinum

Boucheron Retro Gold, Sapphire, and Diamond Scroll Design Clip Brooches
By Boucheron
Located in New York, NY
A pair of Retro scroll design gold clip brooches set with square-cut sapphires and round diamonds
Category

Vintage 1940s French Retro Brooches

Materials

Diamond, Sapphire, Gold, 18k Gold, Platinum

Cartier Aquamarine and Diamond Brooch
By Cartier
Located in New York, NY
This rare Cartier Paris aquamarine brooch with its bold diamond chevron patterning dates from the
Category

Vintage 1930s French Art Deco Brooches

Materials

White Diamond, Aquamarine, Diamond, Platinum

Cartier Aquamarine and Diamond Brooch
Cartier Aquamarine and Diamond Brooch
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W 0.75 in L 1.75 in
Antique 1.38 Carat Aquamarine and 0.75 karat Diamond Yellow Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
forty-eight diamonds, in a combination of Dutch and eight cut. This aquamarine brooch secures to the
Category

20th Century Edwardian Brooches

Materials

Aquamarine, Diamond, 15k Gold, Yellow Gold

Sapphire, Ruby Diamond Flag Brooch
Located in Cincinnati, OH
! Platinum flag has: 24 full cut round diamonds, approximately .24 tdw, SI1 clarity, H-I color. 9
Category

21st Century and Contemporary American Brooches

Materials

Diamond, Ruby, Sapphire, 14k Gold, Platinum

Sapphire, Ruby Diamond Flag Brooch
Sapphire, Ruby Diamond Flag Brooch
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D 0.12 in Dm 1.26 in
Plat 1" American Flag Brooch, .85Ct. Diamond, 1.75 Carat Ruby & 1.88Ct. Sapphire
By Cellini
Located in New York, NY
The perfect brooch for 2020. Our American flag brooch set with round brilliant diamonds and square
Category

Early 2000s Contemporary Brooches

Materials

Diamond, Ruby, Blue Sapphire, Platinum

Van Cleef & Arpels Invisible-set Ruby and Diamond Flower Brooch
By Van Cleef & Arpels
Located in New York, NY
Round and Square Emerald cut diamonds. Signed by Van Cleef & Arpels Paris Art Deco, circa 1930s 2 1/2" x
Category

Vintage 1930s American Brooches

Materials

Diamond, Ruby, 18k Gold, White Gold

Brooch Pin Diamonds and Sapphires Two-Color Gold Vintage Art-Deko-Style
Located in München, DE
sapphires in a square cut of fine royal blue and with 4 diamonds totaling approximately 0.34 carats, Color
Category

Vintage 1950s European Art Deco Brooches

Materials

Diamond, 14k Gold

Vintage 18K Le Vian Invisible Set Ruby Diamond Lobster Brooch RETIRED
By Le Vian
Located in Winter Springs, FL
lobster brooch in the largest size done in 18K yellow gold with perfectly matched invisible set rubies and
Category

Late 20th Century Contemporary Brooches

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Ruby and Diamond Ribbon Brooch
Located in New York, NY
A fashionable piece of jewelry showcasing square cut rubies and round diamonds, elegantly set in a
Category

Vintage 1980s American Brooches

Materials

Diamond, Ruby, White Gold, Yellow Gold

Ruby and Diamond Ribbon Brooch
Ruby and Diamond Ribbon Brooch
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W 1.26 in L 0.79 in
Cartier Ruby and Diamond 18 Karat Yellow Gold Brooch, Circa 1950.
By Cartier
Located in London, GB
Cartier ruby and diamond 18 karat yellow gold brooch circa 1950. This elegant brooch comprises of
Category

Vintage 1960s French Post-War Brooches

Materials

Diamond, Ruby, Yellow Gold

Oscar Heyman Platinum Union Jack Ruby, Sapphire, and Diamond Flag Brooch
By Oscar Heyman
Located in New York City, NY
Oscar Heyman platinum Union Jack flag brooch contains rubies (2.63cts), sapphires (1.59cts) and
Category

2010s American Contemporary Brooches

Materials

Diamond, Ruby, Sapphire, Platinum

Large Floral brooch 18KT sapphire & diamond brooch RARE
Located in Jupiter, FL
Rare exquisite sapphire & diamond brooch in 18KT white gold. METAL: 18KT NATURAL DIAMOND(S
Category

21st Century and Contemporary Brooches

Ruby with Diamond Flower Brooch/Pendant Set in 18 Karat Gold Settings
Located in Bangkok, TH
Ruby 9.33 carats with Diamond 0.71 carat Brooch/Pendant set in 18 Karat Gold Settings (chain not
Category

2010s Thai Contemporary Brooches

Materials

Diamond, Ruby, Gold, 18k Gold

18 Karat Gold Frog Brooch with Invisibly Set Tsavorites, Diamonds, and Rubies
Located in New York, NY
18 karat yellow gold frog brooch beautifully set with 0.81 carats of invisibly set square cut
Category

1990s Contemporary Brooches

Materials

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

Retro Gübelin Gold, Diamond, and Sapphire Clip Brooch of Stylized Bow Design
By Gubelin
Located in New York, NY
A Retro gold, sapphire, and diamond brooch designed as a stylized asymmetrical bow with a scrolled
Category

Vintage 1940s Swiss Retro Brooches

Materials

Diamond, Sapphire, Gold, Platinum

Ruby and diamond brooch, circa 1945.
Located in London, GB
Ruby and diamond brooch. Set to centre with thirty four square baguette cut natural unenhanced
Category

Vintage 1940s Brooches

Materials

Diamond, Ruby, Yellow Gold, Platinum

Art Deco Diamond & Burma Sapphire & Ruby Brooches, one by Cartier, c. 1920.
By Cartier
Located in Aspen, CO
Cartier Art Deco diamond and unheated Burma sapphire, platinum brooch/hair barrette (signed and
Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, White Diamond, Ruby, Sapphire, Blue Sapphire, Platinum

Cabochon Sapphire and Diamond Dragonfly Brooch
Located in New York, NY
Platinum, Gold, Cabochon Sapphire and Diamond Dragonfly Brooch This brooch has a center oval
Category

Late 20th Century European Artist Brooches

Materials

Diamond, Sapphire, Platinum

Open Mouth Fish Brooch / Pendant Set with Diamonds, Ruby, Sapphire, Emerald
Located in Antwerp, BE
Open Mouth Fish Brooch / Pendant Set With Diamonds, Ruby , Sapphire, Emerald Attached to the
Category

20th Century Artisan Brooches

Materials

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

Diamond, Tsavorite and Ruby Insect Brooch in 18 Karat Yellow Gold
Located in London, GB
This charming insect brooch from the Haruni Vaults is handmade in 18k yellow gold with vibrant
Category

21st Century and Contemporary British Modern Brooches

Materials

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

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Square Diamond Brooch For Sale on 1stDibs

Find the exact square diamond brooch you’re shopping for in the variety available on 1stDibs. Frequently made of Gold, 18k Gold and Yellow Gold, this item was constructed with great care. You can easily find a 125 antique edition and 34 modern creations to choose from as well. Making the right choice when shopping for a square diamond brooch 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 square diamond brooch over the years, but those made by Sabbadini, Cellini and Cartier are often thought to be among the most beautiful. A square cut version of this piece has appeal, but there are also round cut and emerald cut versions for sale. If you’re browsing our inventory for a square diamond brooch, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Square Diamond Brooch?

The price for a square diamond brooch starts at $488 and tops out at $81,231 with these brooches, on average, selling for $7,371.

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.

Questions About Square Diamond Brooch
  • 1stDibs ExpertOctober 12, 2021
    A square diamond is sometimes known as a princess-cut diamond. Princess-cut diamonds have only been in their current form since the 1960s, making them a relatively new diamond shape. The beauty, flair, and edge of a square diamond are well-known. Shop a range of antique and vintage diamond jewelry on 1stDibs today.
  • There are a few diamond cuts that can be considered square diamond rings. Here is a list: 1. Emerald cut 2. Asscher cut 3. Princess cut 4. Radiant.cut 5. Cushion cut