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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

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

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

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

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

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
Sabbadini 18 Karat Gold Ladybug Brooch with Pink Tourmaline, Onyx and Diamonds
By Sabbadini
Located in New York, NY
brilliant diamonds, and cabochon onyx for eyes. The brooch measures 1" x 3/4". Total Pink Tourmaline 5.32
Category

21st Century and Contemporary Italian Contemporary Brooches

Materials

Diamond, Onyx, Tourmaline, 18k Gold, Yellow Gold

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
18kt Yellow Gold Angelfish Brooch with Invisibly Set Ruby, Sapphires & Diamonds
By Cellini
Located in New York, NY
with square cut rubies,blue and yellow sapphires along with pave set round brilliant diamonds. A
Category

1990s Italian Contemporary Brooches

Materials

Diamond, Ruby, Sapphire, Blue Sapphire, Yellow Sapphire, 18k Gold, Yello...

Yellow Sapphire with Diamond Flower Brooch or Pendant Set in 18 Karat Gold
Located in Bangkok, TH
Yellow Sapphire 9.91 carats with Diamond 0.67 carat Brooch/Pendant set in 18 Karat Gold Settings
Category

2010s Thai Brooches

Materials

Diamond, Yellow Sapphire, Gold, 18k Gold

Tsavorites, Ruby, Blue Sapphire with Diamond Bird Brooch in 18 Karat Gold
Located in Bangkok, TH
Tsavorite 11.74 carats, Ruby 30.54 carats, Blue Sapphire 4.05 carats, Diamond 2.03 carats Brooch
Category

2010s Thai Contemporary Brooches

Materials

Diamond, Ruby, Blue Sapphire, Tsavorite, Gold, 18k Gold

Ruby with Diamond Horse Brooch/Pendant Set in 18 Karat White Gold Setting
Located in Bangkok, TH
Ruby 27.20 carats, Diamond 2.65 carats with Yellow Diamond 0.07 carat and Black Diamond 0.015
Category

2010s Thai Contemporary Brooches

Materials

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

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

Ruby, Tsavorite, Blue Sapphire with Diamond Parrot Brooch Set in 18 Karat Gold
Located in Bangkok, TH
Ruby 38.04 carats, Tsavorite 11.32 carats, Blue Sapphire 1.14 carats, Diamond 1.42 carats with
Category

2010s Thai Contemporary Brooches

Materials

Diamond, Ruby, Blue Sapphire, Tsavorite, Gold, 18k 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
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
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

Platinum Large American Flag Brooch with Diamonds, Rubies, and Sapphires
By Cellini
Located in New York, NY
Show off your patriotism with this platinum American flag brooch composed of square cut rubies and
Category

21st Century and Contemporary American Modern Brooches

Materials

Diamond, Ruby, Sapphire, Platinum

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
18KT Gold Bee Brooch with Diamond .94 Carat Ruby 1.67 Carat and South Sea Pearl
By Cellini
Located in New York, NY
18 karat yellow gold bee brooch. This lovely brooch is beautifully designed with a body of
Category

1990s Italian Contemporary Brooches

Materials

Diamond, Emerald, South Sea Pearl, Ruby, 18k Gold, Yellow Gold

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, 18k Gold, Yellow Gold, Platinum

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
Multi-Gemstone Peacock Brooch with Diamonds, Rubies, Emeralds and Sapphires
Located in London, GB
feather are square cut sapphires totalling 0.24ct and square emeralds totalling 0.24ct. The brooch
Category

21st Century and Contemporary Brooches

Materials

Diamond, Emerald, Multi-gemstone, Ruby, Sapphire, 18k Gold, Yellow Gold

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

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
Antique Pearl, 2.02Ct Sapphire and 4.95Ct Diamond, 18k Yellow Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
cut diamonds, totalling 4.95cts and completing the design. This antique brooch secures to the reverse
Category

Vintage 1910s Brooches

Materials

Diamond, Pearl, Sapphire, Yellow Gold, Silver

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

ART DECO brooch set with ruby and diamonds 18k bicolour gold
Located in The Hague, ZH
18k bicolour gold brooch with ruby ​​and old mine cut and rose cut diamond 0.50 ct F/G - VS/SI
Category

Vintage 1910s Dutch Art Deco Brooches

Materials

Diamond, Ruby, Gold, 18k 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

Aquamarine, Diamond, White 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

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

Vintage Ammolite Cabochon Brooch with Diamonds in 14 Karat Yellow Gold
Located in Scottsdale, AZ
Captivating ammolite cabochon brooch adorned with dazzling natural diamonds. This radiant accessory
Category

20th Century Unknown Contemporary Brooches

Materials

Diamond, Other, Gold, Yellow Gold, 14k 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
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

Art Deco Brooch/Pendant Platinum Filigree Setting Set With Diamonds & Sapphires
Located in valatie, NY
brooch has 16 diamonds, total weight approximately 3.75 carats and 16 square French cut sapphires
Category

Early 20th Century Unknown Art Deco Brooches

Materials

Diamond, Blue Sapphire, Sapphire, Platinum

Cartier Paris Elephant Brooch 18Kt Gold With 5.24 Ctw Diamonds Emeralds & Rubies
By Cartier
Located in Miami, FL
Mughal elephant brooch designed by Cartier. Fabulous and very rare elephant brooch, created in
Category

Late 20th Century French Modernist Brooches

Materials

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

18k Gold Horse Brooch Pin with Diamond Pavé - E. Wolfe & Co, London
By E. Wolfe & Company
Located in Magenta, IT
An 18k white gold brooch depicting a running horse, with diamond pave all over the body. Made by E
Category

20th Century British Brooches

Materials

Diamond, 18k Gold

Victorian Emerald Diamond Quartz 18 Karat Gold Cupid Psyche Antique Brooch
Located in Philadelphia, PA
trumpet Bezel set with a pierced silver-topped foliate motif surround Accented by square step-cut
Category

Antique 1870s Victorian Brooches

Materials

Diamond, Emerald, Gold, 18k Gold, Silver

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

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

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

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Square Brooch With Diamond For Sale on 1stDibs

Find the exact square brooch with diamond 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 18k Gold, Gold and Yellow Gold — can elevate any look. In our selection of items, you can find a vintage example as well as a contemporary version. Finding the perfect square brooch with diamond may mean sifting through those created during different time periods — you can find an early version that dates to the 20th Century and a newer variation that were made as recently as the 21st Century. A square brooch with diamond from Cellini and Sabbadini — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for a square cut version of this piece and are unable to find the perfect match, our selection also includes round cut alternatives. If you’re browsing our inventory for a square brooch with diamond, 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 Brooch With Diamond?

The price for a square brooch with diamond starts at $960 and tops out at $22,990 with these brooches, on average, selling for $8,300.

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 Brooch With Diamond
  • 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