Skip to main content

Square Diamond Platinum Brooch

Platinum and Emerald Diamond Brooch
Platinum and Emerald Diamond Brooch

Platinum and Emerald Diamond Brooch

Located in New York, NY

Platinum and Emerald Diamond Brooch. Details: Platinum, emerald, diamonds, about approx. 4.5 carats of diamonds, 6 carats of emerald. Circa 1970s. Weight 15.1 grams. In excellent c...

Category

Vintage 1970s Brooches

Materials

Diamond, Emerald, Platinum

Leaf Brooch with Square-Cut Emerald and White Diamonds
Leaf Brooch with Square-Cut Emerald and White Diamonds

Leaf Brooch with Square-Cut Emerald and White Diamonds

Located in Scottsdale, AZ

This brooch features a leaf design adorned with a single square-cut green emerald and multiple round white diamonds. Stone Info: 1x Emerald ~0.16ct 60x Diamonds VS1/G ~0.04ct/ea To...

Category

21st Century and Contemporary Brooches

Materials

Diamond, Emerald, Platinum

Edwardian Peridot and Diamond Platinum Brooch
Edwardian Peridot and Diamond Platinum Brooch

Edwardian Peridot and Diamond Platinum Brooch

Located in Banbury, GB

An Edwardian peridot and diamond brooch, of quatrefoil design, centered with a square-shaped peridot within a foliate scroll surround set with old circular-cut diamonds in platinum o...

Category

Antique Early 1900s British Edwardian Brooches

Materials

Diamond, Peridot, Platinum

Platinum Sapphire and Diamond Filigree Brooch/Pin #21768
Platinum Sapphire and Diamond Filigree Brooch/Pin #21768

Platinum Sapphire and Diamond Filigree Brooch/Pin #21768

Located in Washington Depot, CT

Platinum Sapphire and Diamond Filigree Brooch/Pin JAGi Certified- This stunning brooch features 5 square cut natural blue sapphires and 20 round cut diamonds set in ornate filigree ...

Category

20th Century Contemporary Brooches

Materials

Diamond, Sapphire, Platinum

Tiffany & Co Square Brooch Pin Art Deco Diamonds & Onyx Circa 1920's Platinum
Tiffany & Co Square Brooch Pin Art Deco Diamonds & Onyx Circa 1920's Platinum

Tiffany & Co Square Brooch Pin Art Deco Diamonds & Onyx Circa 1920's Platinum

By Tiffany & Co.

Located in New York, NY

Tiffany & co 1920's beautiful art deco Vintage Brooch pin Onyx and French Cut Diamonds Platinum metal Approx weight 9.0 grams Size: approx 30 x 30 mm This Unique Brooch has a true Vi...

Category

Vintage 1920s American Art Deco Brooches

Materials

Diamond, Onyx, Platinum

Art Deco Platinum Diamond & Sapphire Open Square Cut Corner Ribbon Top Brooch
Art Deco Platinum Diamond & Sapphire Open Square Cut Corner Ribbon Top Brooch

Art Deco Platinum Diamond & Sapphire Open Square Cut Corner Ribbon Top Brooch

Located in Montclair, NJ

-- Stone(s) -- (77) Natural Genuine Diamonds - Old Mine & Single Cut - Pave Set - Nice Brilliant White Diamonds - 1.10ctw (approx.) (44) Synthetic Sapphires - Baguette French Cut...

Category

Antique 19th Century Art Deco Brooches

Materials

Diamond, Sapphire, White Gold, Platinum

Oscar Heyman Platinum Diamond and Sapphire Circle Brooch
Oscar Heyman Platinum Diamond and Sapphire Circle Brooch

Oscar Heyman Platinum Diamond and Sapphire Circle Brooch

By Oscar Heyman

Located in Chicago, IL

Circa 1960s Oscar Heyman Platinum Circle Brooch, set with Round Brilliant cut Diamonds totaling 1 Carat and Fine color French cut sapphires. The brooch measures 1 3/8 inch in diameter.

Category

Vintage 1960s American Brooches

Materials

Diamond, Sapphire, Platinum

Adorable Oscar Heyman Carved Ruby Diamond Platinum Bird Brooch
Adorable Oscar Heyman Carved Ruby Diamond Platinum Bird Brooch

Adorable Oscar Heyman Carved Ruby Diamond Platinum Bird Brooch

By Oscar Heyman

Located in New York, NY

Adorable platinum bird brooch by Oscar Heyman, set with carved ruby, enamel accents and approx.0.85ctw FG/VS diamonds. Brooch measures 1 3/16" x 7/8". Hallmarked 980 91 serial number...

Category

20th Century North American Brooches

Materials

Diamond, Onyx, Ruby, Platinum

Vintage 1950s Platinum Carré Diamond Vivid Ruby Flowing Ribbon Brooch 18ctw
Vintage 1950s Platinum Carré Diamond Vivid Ruby Flowing Ribbon Brooch 18ctw

Vintage 1950s Platinum Carré Diamond Vivid Ruby Flowing Ribbon Brooch 18ctw

Located in Winter Springs, FL

Details: • Era: 1950s • Metal: Platinum (brooch), 18K gold pin; stamped 950 platinum • Gemstones: Natural rubies and diamonds • Diamonds: Approximately 12.50 carats total weight ...

Category

Mid-20th Century Retro Brooches

Materials

Diamond, Ruby, Platinum

Antique 0.24Ct Sapphire and 0.12Ct Diamond Platinum Pin Brooch Circa 1930
Antique 0.24Ct Sapphire and 0.12Ct Diamond Platinum Pin Brooch Circa 1930

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 set in 18 karat white gold, part of our antique sapphire jewelry collections.

Category

Vintage 1930s Brooches

Materials

Diamond, Sapphire, White Gold, Platinum

Antique Edwardian Platinum Peridot and Pearl Swag Brooch
Antique Edwardian Platinum Peridot and Pearl Swag Brooch

Antique Edwardian Platinum Peridot and Pearl Swag Brooch

Located in New York, NY

A graceful Edwardian brooch designed in the refined swag style, delicately composed of platinum.

Category

Early 20th Century Edwardian Brooches

Materials

Diamond, Pearl, Peridot, Platinum, Brass

Antique Edwardian 1910s 5.00 Carat Diamond Brooch with Onyx
Antique Edwardian 1910s 5.00 Carat Diamond Brooch with Onyx

Antique Edwardian 1910s 5.00 Carat Diamond Brooch with Onyx

Located in New York, NY

Finely crafted in platinum with a Modified Square cut Diamond at the center weighing approximately 1.00 carat, Single, Baguette, and Trapezoid cut Diamonds weighing a total of approx...

Category

Vintage 1910s Edwardian Brooches

Materials

Diamond, Onyx, Platinum

TIFFANY & CO. 18K Yellow Gold Ruby and Diamond Brooch
TIFFANY & CO. 18K Yellow Gold Ruby and Diamond Brooch

TIFFANY & CO. 18K Yellow Gold Ruby and Diamond Brooch

By Tiffany & Co.

Located in New York, NY

A striking example of bold, sculptural design, this TIFFANY & CO. brooch is crafted in richly polished 18K yellow gold, forming a dramatic, stylized silhouette with clean, modern lin...

Category

20th Century Brooches

Materials

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

1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch
1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch

1910s Antique Pearl Ruby and Diamond Yellow Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

The brooch has an interwoven ring design. The brooch is embellished with twenty-two channel set square cut rubies.

Category

Vintage 1910s Unknown Art Deco Brooches

Materials

Diamond, Pearl, Ruby, Yellow Gold, Platinum

Colombian Emerald, Diamond and Onyx Art Deco Brooch, ca. 1920s
Colombian Emerald, Diamond and Onyx Art Deco Brooch, ca. 1920s

Colombian 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.

Category

Vintage 1920s Swedish Art Deco Brooches

Materials

Onyx, Emerald, Diamond, Platinum

Boucheron Retro Gold, Sapphire, and Diamond Scroll Design Clip Brooches
Boucheron Retro Gold, Sapphire, and Diamond Scroll Design Clip Brooches

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, in platinum and 18k.

Category

Vintage 1940s French Retro Brooches

Materials

Diamond, Sapphire, Gold, 18k Gold, Platinum

Antique Art Deco 1930s 8.00 Carat Diamond Brooch with Emeralds and Onyx
Antique Art Deco 1930s 8.00 Carat Diamond Brooch with Emeralds and Onyx

Antique Art Deco 1930s 8.00 Carat Diamond Brooch with Emeralds and Onyx

Located in New York, NY

Finely crafted in platinum with a Square cut Diamond at the center weighing approximately 1.00 carat, smaller Square and Old European cut Diamonds weighing approximately a total of 7...

Category

Vintage 1930s Brooches

Materials

Diamond, Emerald, Onyx, Platinum

Plat 1" American Flag Brooch, .85Ct. Diamond, 1.75 Carat Ruby & 1.88Ct. Sapphire
Plat 1" American Flag Brooch, .85Ct. Diamond, 1.75 Carat Ruby & 1.88Ct. Sapphire

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 cut rubies and sapphires. the brooch measures approximately 1".

Category

Early 2000s Contemporary Brooches

Materials

Diamond, Ruby, Blue Sapphire, Platinum

Retro Gübelin Gold, Diamond, and Sapphire Clip Brooch of Stylized Bow Design
Retro Gübelin Gold, Diamond, and Sapphire Clip Brooch of Stylized Bow Design

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 end, in 18k and platinum with double prong clip fitting. Atw 0.70 ct. single cut di...

Category

Vintage 1940s Swiss Retro Brooches

Materials

Diamond, Sapphire, Gold, Platinum

Oscar Heyman Platinum Union Jack Diamond, Sapphire, and Ruby Lapel Pin
Oscar Heyman Platinum Union Jack Diamond, Sapphire, and Ruby Lapel Pin

Oscar Heyman Platinum Union Jack Diamond, Sapphire, and Ruby Lapel Pin

By Oscar Heyman

Located in New York City, NY

Oscar Heyman platinum Union Jack flag lapel pin contains custom cut rubies (0.76cts), sapphires (0.64cts) and round diamonds (0.05cts). It is a gently waving flag motif with lots of ...

Category

2010s American Contemporary Brooches

Materials

Diamond, Ruby, Sapphire, Platinum

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA
Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Located in Great Neck, NY

Beautiful Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA. This incredible Art Deco Yogo sapphire bar pin is crafted in platinum. The pin features twelve...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

Antique 18 Karat Yellow Gold & Platinum Bar Pin with Ruby & Diamond
Antique 18 Karat Yellow Gold & Platinum Bar Pin with Ruby & Diamond

Antique 18 Karat Yellow Gold & Platinum Bar Pin with Ruby & Diamond

Located in Vero Beach, FL

Antique 18 karat yellow gold bar pin with platinum top. Pin measures 2 1/2 ” long x 1/4 ” wide. Pin has 8 (eight) Old Mine Cut Diamonds weighing approx. 0.16 carat total. 8 (ei...

Category

Antique Late 19th Century European High Victorian Brooches

Materials

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

Retro Ruby Sapphire Diamond Emerald Enamel 18k Yellow Gold & Platinum Bird Brooc
Retro Ruby Sapphire Diamond Emerald Enamel 18k Yellow Gold & Platinum Bird Brooc

Retro Ruby Sapphire Diamond Emerald Enamel 18k Yellow Gold & Platinum Bird Brooc

Located in Beverly Hills, CA

The bird's wings and tail are adorned with squares shape ruby, emerald and sapphire along with white diamonds adding brilliant contrast.

Category

Vintage 1930s American Retro Brooches

Materials

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

Vintage Retro 14k Gold & Platinum GIA Burma No Heat Ruby Diamond Ribbon Bar Pin
Vintage Retro 14k Gold & Platinum GIA Burma No Heat Ruby Diamond Ribbon Bar Pin

Vintage Retro 14k Gold & Platinum GIA Burma No Heat Ruby Diamond Ribbon Bar Pin

Located in Montclair, NJ

This marvelous retro vintage ribbon pin brooch was crafted from solid 14k rose gold and solid platinum, and is dated 1938.

Category

Vintage 1940s Retro Brooches

Materials

Diamond, Ruby, 14k Gold, Rose Gold, Platinum

Circa 1920s Art Deco 18K Yellow Gold & Platinum Sapphire and Diamond Bar Pin
Circa 1920s Art Deco 18K Yellow Gold & Platinum Sapphire and Diamond Bar Pin

Circa 1920s Art Deco 18K Yellow Gold & Platinum Sapphire and Diamond Bar Pin

Located in Hicksville, NY

Year: 1920s Item Details: Metal Type: 18K Yellow Gold & Platinum Top [Hallmarked, and Tested] Weight: 8.4 grams Diamond Details: Weight: .35ct, total weight Cut: Rose Cut Color: ...

Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Tiffany & Co. Art Deco Sapphire and Diamond Bar Pin
Tiffany & Co. Art Deco Sapphire and Diamond Bar Pin

Tiffany & Co. Art Deco Sapphire and Diamond Bar Pin

By Tiffany & Co.

Located in Bethesda, MD

This Tiffany & Co. Art Deco platinum pin sounds exquisite! Featuring 10 diamonds with a total of 0.90 carats, graded D-E color and VS clarity, combined with 8 royal blue square sapph...

Category

Vintage 1930s American Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

Antique Kunzite & Diamond Necklace/Brooch circa 1910
Antique Kunzite & Diamond Necklace/Brooch circa 1910

Antique Kunzite & Diamond Necklace/Brooch circa 1910

$47,170

H 0.87 in W 0.87 in L 9.06 in

Antique Kunzite & Diamond Necklace/Brooch circa 1910

Located in London, GB

Summary: Antique Kunzite & Diamond Necklace/Brooch Description: An Edwardian kunzite and diamond pendant necklace with a detachable brooch fitting, circa 1910. The step cut kunzite i...

Category

Early 20th Century British Pendant Necklaces

Materials

White Diamond, Kunzite, Platinum

Recent Sales

7.00 Carat Old Miner, French Cut & Square Emerald Art Deco Platinum Pin
7.00 Carat Old Miner, French Cut & Square Emerald Art Deco Platinum Pin

7.00 Carat Old Miner, French Cut & Square Emerald Art Deco Platinum Pin

Located in New York, NY

Classic Art Deco brooch combining the breadth of Old Miner, French Cut, Square Cut, and Emerald Cut white diamonds that culminate into the center of the brooch.

Category

Early 20th Century American Art Deco Brooches

Materials

White Diamond, Emerald, Platinum

Platinum Diamond and Sapphire Brooch
Platinum Diamond and Sapphire Brooch

Platinum Diamond and Sapphire Brooch

Located in Princeton, NJ

Vintage Platinum Sapphire & Diamond brooch. The oval shaped brooch has an outer row of diamonds and an inner row of square sapphires.

Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

Square-Shaped Diamond Brooch with Oynx
Square-Shaped Diamond Brooch with Oynx

Square-Shaped Diamond Brooch with Oynx

Located in New York, NY

It is adorned with a cute round-cut diamond bowtie and ribbon on the square frame brooch, further enhanced with rectangle cushion-cut black onyxes.

Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Onyx, Platinum

2.45 Carat Sapphire and 1.75 Carat Diamond Platinum Brooch
2.45 Carat Sapphire and 1.75 Carat Diamond Platinum Brooch

2.45 Carat Sapphire and 1.75 Carat Diamond Platinum Brooch

Located in Jesmond, Newcastle Upon Tyne

A stunning, fine and impressive vintage 2.45 carat blue sapphire and 1.75 carat diamond, platinum brooch; part of our diverse vintage sapphire jewelry collections.

Category

Vintage 1940s Brooches

Materials

Diamond, Sapphire, Platinum

6 Carat Ruby and 1.31 Carat Diamond Platinum Bow Brooch
6 Carat Ruby and 1.31 Carat Diamond Platinum Bow Brooch

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 diverse antique jewellery and estate jewelry collections.

Category

Vintage 1920s Unknown Brooches

Materials

Diamond, Ruby, Platinum

Platinum Diamond Sapphire Brooch Womens Vintage Art Deco Royalcore Estate
Platinum Diamond Sapphire Brooch Womens Vintage Art Deco Royalcore Estate

Platinum Diamond Sapphire Brooch Womens Vintage Art Deco Royalcore Estate

Located in New York, NY

Sapphire and Diamond Brooch Metal Type: Platinum 950 Total Item Weight: 11.4 Grams 1: Primary Stone: Natural Sapphire Primary Carat Weight: 6.0 Ct.

Category

Mid-20th Century Art Deco Brooches

Materials

Diamond, Sapphire, Platinum

Belle Epoque Platinum & Gold Aquamarine Ruby Diamond and Pearl Pin Brooch
Belle Epoque Platinum & Gold Aquamarine Ruby Diamond and Pearl Pin Brooch

Belle Epoque Platinum & Gold Aquamarine Ruby Diamond and Pearl Pin Brooch

Located in Montclair, NJ

-- Stone(s) -- (1) Natural Genuine Aquamarine - Square Step Cut - Milgrain Bezel Set - Light Blue Color - 18.9x18.9mm (approx.) Numerous Natural Genuine Rubies - Calibre Special Cut ...

Category

Antique 19th Century Belle Époque Brooches

Materials

Aquamarine, Diamond, Pearl, Ruby, Gold, Platinum

Antique Edwardian 18k Gold Platinum Diamond Ruby Swallow Flying Bird Pin Brooch
Antique Edwardian 18k Gold Platinum Diamond Ruby Swallow Flying Bird Pin Brooch

Antique Edwardian 18k Gold Platinum Diamond Ruby Swallow Flying Bird Pin Brooch

Located in Montclair, NJ

--Stone(s):-- (33) Natural Genuine Rubies - Calibre Square Cut - Channel Set - Vivid Red Color - Most Likely Burma No Heat (2) Red Stones - Round Brilliant Cut - Pave Set - Red Color...

Category

Early 20th Century Edwardian Brooches

Materials

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

Art Deco 0.75ct Diamond Brooch, c.1920s
Art Deco 0.75ct Diamond Brooch, c.1920s

Art Deco 0.75ct Diamond Brooch, c.1920s

Located in London, GB

This stunning brooch dates back to the roaring 20s. The bold geometric shapes crafted from platinum is a hallmark of the Art Deco period and gives this piece its character. Central t...

Category

Vintage 1920s Unknown Art Deco Brooches

Materials

Diamond, Platinum

Vintage Ruby and Diamond Horseshoe Brooch
Vintage Ruby and Diamond Horseshoe Brooch

Vintage Ruby and Diamond Horseshoe Brooch

Located in London, GB

Here we have a striking brooch crafted from 18ct yellow gold and platinum in a refined horseshoe shape.

Category

Vintage 1930s Brooches

Materials

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

Antique 1930s Emerald Diamond Gold Brooch
Antique 1930s Emerald Diamond Gold Brooch

Antique 1930s Emerald Diamond Gold Brooch

Sold

H 0.15 in W 0.9 in L 2.04 in

Antique 1930s Emerald Diamond Gold Brooch

Located in Jesmond, Newcastle Upon Tyne

A stunning, fine and impressive 2.50 carat natural emerald and 3.03 carat diamond brooch in 9 karat white gold with platinum settings; part of our antique jewelry collections This s...

Category

20th Century Unknown Brooches

Materials

Diamond, Emerald, 9k Gold, White Gold, Platinum, Gold

Diamond, Sapphire and Ruby American Flag Pin/Brooch
Diamond, Sapphire and Ruby American Flag Pin/Brooch

Diamond, Sapphire and Ruby American Flag Pin/Brooch

By Felix Vollman

Located in Bethesda, MD

From Felix Vollman, an American Flag lapel pin/brooch, The platinum pin was made from the original 1930's mold and retailed by Pampillonia in Washington DC. The pin/brooch is 7/8th o...

Category

2010s American Brooches

Materials

Diamond, Ruby, Sapphire, Platinum

Victorian Ruby and Diamond Yellow Gold Bar Brooch
Victorian Ruby and Diamond Yellow Gold Bar Brooch

Victorian Ruby and Diamond Yellow Gold Bar Brooch

Sold

H 0.29 in W 0.91 in L 1.73 in

Victorian Ruby and Diamond Yellow Gold Bar Brooch

Located in Jesmond, Newcastle Upon Tyne

The bar brooch has a twisted helix design to the center, ornamented with thirteen 18k yellow gold channel set square cut rubies and thirteen platinum pavé set eight-cut diamonds.

Category

Antique 1890s Unknown Victorian Brooches

Materials

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

Art Deco Emerald Sapphire and Diamond Bar Brooch
Art Deco Emerald Sapphire and Diamond Bar Brooch

Art Deco Emerald Sapphire and Diamond Bar Brooch

Located in London, GB

A French, Art Deco bar brooch, set with five calibre-cut emeralds, weighing an estimated total of 2.00ct, and four calibre-cut sapphires, weighing an estimated total of 0.50ct, with ...

Category

Vintage 1920s French Art Deco Brooches

Materials

Diamond, Emerald, Onyx, Sapphire, Platinum

Antique Art Deco 1930s 8.00 Carat Diamond Double Clip Brooch with Rubies
Antique Art Deco 1930s 8.00 Carat Diamond Double Clip Brooch with Rubies

Antique Art Deco 1930s 8.00 Carat Diamond Double Clip Brooch with Rubies

Located in New York, NY

Finely crafted in platinum with Old European and Baguette cut Diamonds weighing a total of approximately 8.00 carats, as well as Square cut Rubies weighing a total of approximately 3...

Category

Vintage 1930s Art Deco Brooches

Materials

Diamond, Ruby, Platinum

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA
Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Located in Great Neck, NY

Beautiful Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA. This incredible Art Deco Yogo sapphire bar pin is crafted in platinum and 14k yellow gold. The...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Sapphire, Gold, 14k Gold, Yellow Gold, Platinum

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA
Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA

Located in Great Neck, NY

Beautiful Antique Art Deco Platinum Yogo Gulch Sapphire Old Euro Diamond Bar Pin - GIA. This incredible Art Deco Yogo sapphire bar pin is crafted in platinum and 14k yellow gold. The...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Sapphire, Gold, 14k Gold, Yellow Gold, Platinum

Antique Art Deco 18K Gold Platinum Ruby Diamond and Pearl Target Stick Pin
Antique Art Deco 18K Gold Platinum Ruby Diamond and Pearl Target Stick Pin

Antique Art Deco 18K Gold Platinum Ruby Diamond and Pearl Target Stick Pin

Located in Great Neck, NY

Beautiful Antique Art Deco 18K Gold Platinum Ruby Diamond and Pearl Target Stick Pin. This gorgeous Art Deco diamond ruby and pearl stick pin is crafted in 18k yellow gold and platin...

Category

Vintage 1920s Art Deco Brooches

Materials

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

Art Deco Emerald and Diamond Arrow Jabot Pin
Art Deco Emerald and Diamond Arrow Jabot Pin

Art Deco Emerald and Diamond Arrow Jabot Pin

Located in London, GB

Here we have a classic jabot pin crafted during the early stages of the 20th century. This piece takes on the form of an arrow featuring rose cut diamonds and a single channel of squ...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Emerald, Gold, 18k Gold, Platinum

Art Deco Emerald and Diamond Platinum Brooch
Art Deco Emerald and Diamond Platinum Brooch

Art Deco Emerald and Diamond Platinum Brooch

Located in Chipping Campden, GB

Stylish brooch set with bright emeralds and sparkling diamonds. The emerald total is approx 64pts and the diamond total is approx 2.24cts Modelled out of platinum. Brooch Dimensions...

Category

Vintage 1920s British Art Deco More Jewelry

Materials

Diamond, Emerald, Platinum

Art Deco Platinum Diamond & Emerald Circle Brooch
Art Deco Platinum Diamond & Emerald Circle Brooch

Art Deco Platinum Diamond & Emerald Circle Brooch

Located in McLeansville, NC

An Art Deco platinum diamond and emerald circle brooch. This brooch features a curcular design set with transitional cut diamonds weighing approximately 1.04 total carats with baguet...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Emerald, Platinum

Edwardian Sapphire Diamond Pearl Platinum Tennis Racket Brooch
Edwardian Sapphire Diamond Pearl Platinum Tennis Racket Brooch

Edwardian Sapphire Diamond Pearl Platinum Tennis Racket Brooch

Located in Philadelphia, PA

Bar style brooch designed as an antique tennis racket Hand woven platinum wire net cradles a 3.0 mm round pearl; cream with good luster Handle is channel set with square cut sapphi...

Category

Vintage 1910s French Edwardian Brooches

Materials

Diamond, White Diamond, Pearl, Sapphire, Blue Sapphire, Platinum

Platinum, Ruby and Diamond Clip
Platinum, Ruby and Diamond Clip

Platinum, Ruby and Diamond Clip

Sold

H 1.75 in L 1.75 in

Platinum, Ruby and Diamond Clip

Located in New York, NY

Of geometric motif, topped by 2 square-cut rubies ap. 1.25 cts., edged by 46 rectangular and square-cut rubies ap. 2.85 cts., set with 2 old European and 2 square step-cut diamonds a...

Category

Mid-20th Century American Art Deco Brooches

Materials

Diamond, Ruby

Art Deco Sapphire and Diamond Stickpin of Platinum and 18k Gold
Art Deco Sapphire and Diamond Stickpin of Platinum and 18k Gold

Art Deco Sapphire and Diamond Stickpin of Platinum and 18k Gold

Located in Lewisburg, PA

An elegant creation from the Art Deco era (circa 1920), this antique stickpin features a geometric square design set with deep blue sapphires and sparkling diamonds in platinum, perf...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Sapphire, 18k Gold, Platinum

Art Deco Emerald and Diamond Bow Brooch
Art Deco Emerald and Diamond Bow Brooch

Art Deco Emerald and Diamond Bow Brooch

Located in London, GB

An Art Deco emerald and diamond bow brooch, the brooch in the form of a ribbon bow, set with central triple-row of calibre-cut emeralds between two rows of swiss-cut diamonds, all se...

Category

Vintage 1920s Art Deco Brooches

Materials

Diamond, Emerald, 18k Gold, Platinum

Boivin brooch Yellow Gold and Platinum Square Diamonds and Sapphires
Boivin brooch Yellow Gold and Platinum Square Diamonds and Sapphires

Boivin brooch Yellow Gold and Platinum Square Diamonds and Sapphires

By René Boivin

Located in Ebene, MU

A Yellow gold and Platinum René Boivin brooch set with 38 old square cut diamonds and 15 calibré ceylonese sapphires.

Category

Vintage 1930s French Art Deco Brooches

Materials

White Diamond, Blue Sapphire, 18k Gold, Platinum

Bird of Paradise Brooch with Approx 6 Carat Round, Baguettes and Square Diamonds
Bird of Paradise Brooch with Approx 6 Carat Round, Baguettes and Square Diamonds

Bird of Paradise Brooch with Approx 6 Carat Round, Baguettes and Square Diamonds

Located in Surfside, FL

"Bird of Paradise" sitting on a branch, brooch with approx 6 carat full cut round brillant, baguette and square diamonds, set in Platinum.

Category

20th Century Brooches

Materials

Platinum

Art Déco Jabot Brooch Set with Diamonds
Art Déco Jabot Brooch Set with Diamonds

Art Déco Jabot Brooch Set with Diamonds

Located in Paris, IDF

A platinum Art Déco Jabot pin, set with square and brilliant cut diamonds.  Total weight of diamonds : about 1.50 carat Circa 1930

Category

Vintage 1920s French Art Deco Brooches

Materials

Diamond, Platinum

People Also Browsed

Diamond Necklace Tiara
Diamond Necklace Tiara

Diamond Necklace Tiara

By Diamond Scene New York

Located in New York, NY

A MASTERPIECE! 46.75 carats of white pear, marquise and round brilliant cut diamonds set in 18k white gold. The piece can be worn as a necklace and easily converted into a tiara...

Category

21st Century and Contemporary Drop Necklaces

Materials

Diamond, 18k Gold

18K White Gold Emerald and Diamond Halfway Tennis Necklace 3.51 Carats Total
18K White Gold Emerald and Diamond Halfway Tennis Necklace 3.51 Carats Total

18K White Gold Emerald and Diamond Halfway Tennis Necklace 3.51 Carats Total

Located in Great Neck, NY

This refined halfway emerald and diamond tennis necklace is expertly crafted in solid 18K white gold, offering a timeless silhouette with elevated brilliance. Designed to highlight t...

Category

21st Century and Contemporary Contemporary Choker Necklaces

Materials

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

Dolce & Gabbana Lace up Silk Dress
Dolce & Gabbana Lace up Silk Dress

Dolce & Gabbana Lace up Silk Dress

By Dolce & Gabbana

Located in Water Mill, NY

A beautiful stretch silk leopard print dress from Dolce & Gabbana. The bodice has adjustable straps, functional and adjustable side lacing through to the hips plus rows of top st...

Category

1990s Italian Evening Dresses and Gowns

Royal Natural white topaz sterling silver tiara head accessory wedding band
Royal Natural white topaz sterling silver tiara head accessory wedding band

Royal Natural white topaz sterling silver tiara head accessory wedding band

Located in Delhi, DL

For the queen in you! This royal tiara is a symbol of beauty and self-love. It is made up of Natural white topaz in sterling silver. Gemstone type- White topaz Gemstone origin- Nat...

Category

2010s Indian Edwardian Pendant Necklaces

Materials

Topaz, Sterling Silver

Ocimar Versolato haute couture light grey wool evening pant suit, fw 1998
Ocimar Versolato haute couture light grey wool evening pant suit, fw 1998

Ocimar Versolato haute couture light grey wool evening pant suit, fw 1998

By Ocimar Versolato

Located in London, GB

Presenting a rare and exceptional piece from Ocimar Versolato's Autumn-Winter 1998 haute couture collection, the evening wool pant suit, a true embodiment of the designer's visionary...

Category

1990s French Trouser Pant Suits

Hermès Curiosity Kelly Bag Charm Pendant Necklace Guilloche Permabrass
Hermès Curiosity Kelly Bag Charm Pendant Necklace Guilloche Permabrass

Hermès Curiosity Kelly Bag Charm Pendant Necklace Guilloche Permabrass

By Hermès

Located in Corcoué Sur Logne, Loire-Atlantique

Adorable Authentic Hermès Pendant In shape of a "Kelly" Bag The smallest version ever of the Iconic Kelly Bag It even has the padlock and clochette-tirette ! Made in France Made...

Category

21st Century and Contemporary French Other

Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s
Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s

Victorian Opal and Diamond Crown Tiara Haircomb Necklace, circa 1880s

Located in Idar-Oberstein, DE

Victorian Opal and Diamond Crown Haircomb Necklace, ca. 1880s A very unusual and stunning Victorian crown, set with fiery opal cabochons and old-mine cut diamonds, from the 1880s. T...

Category

Antique 19th Century Unknown Victorian Choker Necklaces

Materials

Diamond, Opal, Gold, Silver

Christian Lacroix Luxe S/S 1988 runway polka dot pouff petticoat dress
Christian Lacroix Luxe S/S 1988 runway polka dot pouff petticoat dress

Christian Lacroix Luxe S/S 1988 runway polka dot pouff petticoat dress

By Christian Lacroix

Located in BELLEVUE HILL, NSW

An iconic dress from the S/S 1988 Luxe collection, this piece is a gorgeous example of Lacroix's extravagant aesthetic. Cut to create an hourglass figure, the bodice pushes up the br...

Category

1990s French Cocktail Dresses

Vintage 18K Yellow Gold Cornucopia Gemstone Cuff Bracelet
Vintage 18K Yellow Gold Cornucopia Gemstone Cuff Bracelet

Vintage 18K Yellow Gold Cornucopia Gemstone Cuff Bracelet

Located in Great Neck Plaza, NY

This striking vintage cornucopia cuff bracelet is a celebration of abundance and color. Crafted in rich 18K yellow gold, the bold design spills over with a vivid array of 15 deep blu...

Category

Vintage 1960s Cuff Bracelets

Materials

Diamond, Peridot, Blue Sapphire, Pink Sapphire, 18k Gold

Chanel Black Vanity Case Limited Edition Rare Home Decor Cosmetic Jewelry Box
Chanel Black Vanity Case Limited Edition Rare Home Decor Cosmetic Jewelry Box

Chanel Black Vanity Case Limited Edition Rare Home Decor Cosmetic Jewelry Box

By Chanel

Located in Miami, FL

Chanel Limited Edition Pearl Lambskin Quilted Leather Rare Jewelry Box Vanity Case Home Decor Gold hardware Quilted Lambskin leather CC studded pearl drawer knob Features removable ...

Category

2010s Italian Jewelry Boxes

Dolce & Gabbana Black Lingerie Corset Bustier Dress
Dolce & Gabbana Black Lingerie Corset Bustier Dress

Dolce & Gabbana Black Lingerie Corset Bustier Dress

By Dolce & Gabbana

Located in Nice, FR

DOLCE & GABBANA black lingerie corset bustier dress. This sexy dress features : - Black mesh and heavy satin. - Stretchy. - Fitted knee-length. - Satin bra topped with lace detail. ...

Category

20th Century Italian Cocktail Dresses

Two piece Wool Tweed Suit with Black Fox Fur Collar
Two piece Wool Tweed Suit with Black Fox Fur Collar

Two piece Wool Tweed Suit with Black Fox Fur Collar

Located in Amsterdam, NL

We offer more exclusive vintage items, view our frontstore. Details: 2-piece suit with a skirt and a jacket. Made from wool/tweed The black fox fur collar is non- detachable. Size f...

Category

20th Century German Skirt Suits

7.55 Carat Peach Tourmaline Emerald Cut Platinum Diamond Ring
7.55 Carat Peach Tourmaline Emerald Cut Platinum Diamond Ring

7.55 Carat Peach Tourmaline Emerald Cut Platinum Diamond Ring

By Merkaba

Located in Beverly Hills, CA

A 7.55 carat peach tourmaline emerald cut platinum diamond ring, handcrafted by Merkaba Jewelry Beverly Hills as a romantic collector jewel and meaningful alternative engagement ring...

Category

21st Century and Contemporary American Modern Cocktail Rings

Materials

Diamond, Tourmaline, White Diamond, Emerald, Platinum

Van Cleef & Arpels Blooming Diamond Cluster Stud Earrings
Van Cleef & Arpels Blooming Diamond Cluster Stud Earrings

Van Cleef & Arpels Blooming Diamond Cluster Stud Earrings

By Van Cleef & Arpels

Located in New York, NY

A splendid example of the house’s fascinating floral jewelry, these Van Cleef & Arpels Paris diamond stud earrings, designed in a stunning clustered bloom, emanate light and beauty. ...

Category

Vintage 1980s French Clip-on Earrings

Materials

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

Christian Dior by John Galliano Sheer Bronze Gold Knit Mini Dress 1999 2000
Christian Dior by John Galliano Sheer Bronze Gold Knit Mini Dress 1999 2000

Christian Dior by John Galliano Sheer Bronze Gold Knit Mini Dress 1999 2000

By Christian Dior, John Galliano

Located in Berlin, BE

Christian Dior by John Galliano Fall 1999/ 2000 Extremely sexy dress by John Galliano for Dior - a dress that transcends mere fabric to become an emblem of audacious elegance. This...

Category

1990s Italian Evening Dresses and Gowns

Dolce & Gabbana black silk spandex and leather lace up dress, ss 2003
Dolce & Gabbana black silk spandex and leather lace up dress, ss 2003

Dolce & Gabbana black silk spandex and leather lace up dress, ss 2003

By Dolce & Gabbana

Located in London, GB

Dolce & Gabbana; black silk spandex figure hugging evening dress. - Lambskin leather grommet trim - Open on both sides with lace up fastenings - Invisible side zip closure ...

Category

Early 2000s Italian Evening Dresses and Gowns

Get Updated with New Arrivals
Save "Square Diamond Platinum Brooch", and we’ll notify you when there are new listings in this category.

Square Diamond Platinum Brooch For Sale on 1stDibs

You are likely to find exactly the square diamond platinum brooch you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from Platinum, Gold and 18k Gold — can elevate any look. Our collection of these items for sale includes 27 vintage editions and 5 modern creations to choose from as well. Making the right choice when shopping for a square diamond platinum 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. A square diamond platinum brooch from Oscar Heyman, Cellini and Felix Vollman — 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. There aren’t many items for men if you’re seeking a square diamond platinum brooch, as most of the options available are for women and unisex.

How Much is a Square Diamond Platinum Brooch?

The price for a square diamond platinum brooch starts at $1,450 and tops out at $52,000 with these brooches, on average, selling for $11,786.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.  

Finding the Right Brooches for You

Vintage brooches, which refer to decorative jewelry traditionally pinned to garments and used to fasten pieces of clothing together where needed, have seen increasing popularity in recent years.

While jewelry trends come and go, brooches are indeed back on the radar thanks to fashion houses like GucciVersaceDior and Saint Laurent, all of which feature fun pinnable designs in their current collections. Whether a dazzlingly naturalistic Art Nouveau dragonfly, a whimsical David Webb animal, a gem-studded bloom or a streamlined abstract design, these jewels add color and sparkle to your look and a spring to your step. 

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. Chanel, of course, has never abandoned this style, producing gorgeously baroque CC examples since the 1980s.

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 for sale on 1stDibs, including gold brooches, sapphire brooches and more.