Ostertag Brooches

Creator: Ostertag

Ostertag Art Deco Emerald and Diamond Brooch

$110,000

Ostertag Art Deco Emerald and Diamond Brooch

By Ostertag

Located in Riverdale, NY

Wonderful Art Deco Diamond and Emerald brooch from the 1930's, set in platinum by Ostertag, France. This lovely design is very reminiscent of Coco Chanel's logo who was his neighbor in the period, where he was located at 16 Place Vendome. Conjoined "C" motifs are are laid with a ladder of diamond baguettes edged with round stones terminating in 2 large diamonds (over 1 carat each) on one end and large fluted Columbian teardrops with tiny pave ball caps on the other. Really exceptional quality and design from 1930's France. Ostertag pieces are exceptionally rare and have the highest quality gems and workmanship c/o the Rubel Freres...

Category

1930s French Art Deco Vintage Ostertag Brooches

Materials

Diamond, Emerald, Platinum

8 Carat Art Deco Double Clip Emerald Diamond Platinum Brooch

$20,000

W 1.97 in L 0.99 in

8 Carat Art Deco Double Clip Emerald Diamond Platinum Brooch

Located in Bay Harbor Islands, FL

Art Deco double clip brooch set with square, marquise, straight baguette and round diamonds weighing approximately 8 carats.

Category

1920s Vintage Ostertag Brooches

Materials

Diamond, Emerald, Platinum

Art Deco Platinum and Diamond Brooch

$50,000

Art Deco Platinum and Diamond Brooch

Located in Great Neck Plaza, NY

Step into the spotlight with this truly spectacular Art Deco platinum and diamond brooch, a highlight from Maxwell Osborn's ensemble at the 2025 Met Gala. This vintage masterpiece is...

Category

1920s Art Deco Vintage Ostertag Brooches

Materials

Diamond, Platinum

Platinum Art Deco Green Emerald And Diamond 25 Carat Brooch

$60,000

Platinum Art Deco Green Emerald And Diamond 25 Carat Brooch

Located in New York, NY

Platinum Art Deco Green Emerald And Diamond 25 Carat Brooch Art Deco Geometric Emerald And Diamond Double Clip Brooch. We are selling each brooch se...

Category

20th Century Unknown Art Deco Ostertag Brooches

Materials

Diamond, Emerald, Platinum

Art Deco Onyx, Diamond and Emerald Cabochon Brooch, circa 1925

$21,876

Art Deco Onyx, Diamond and Emerald Cabochon Brooch, circa 1925

Located in London, GB

Art Deco onyx, diamond and emerald cabochon brooch. Set with one hundred and six round old cut diamonds with an approximate total weight of 10....

Category

1920s Unknown Art Deco Vintage Ostertag Brooches

Materials

Diamond, Emerald, Onyx, Platinum

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

$22,000

H 0.79 in W 2.05 in

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. The facetted square emerald weighs 2.14 carats and is of Colombian origin. It has an old mine vivid green colour...

Category

1920s Swedish Art Deco Vintage Ostertag Brooches

Materials

Onyx, Emerald, Diamond, Platinum

Antique Art Deco Emerald and 1.29 Carat Diamond Platinum Brooch

$4,382

H 0.14 in W 0.26 in L 1.88 in

Antique Art Deco Emerald and 1.29 Carat Diamond Platinum Brooch

Located in Jesmond, Newcastle Upon Tyne

A stunning, fine and impressive antique Art Deco style 0.48 carat emerald and 1.29 carat diamond, platinum brooch; part of our antique jewelry and estate jewelry collections. This stunning antique diamond and emerald brooch...

Category

1930s Unknown Art Deco Vintage Ostertag Brooches

Materials

Diamond, Emerald, Platinum

Art Deco Diamond Emerald Platinum Brooch

$8,000

H 0.88 in W 1.63 in

Art Deco Diamond Emerald Platinum Brooch

Located in Carmel-by-the-Sea, CA

Just the right size for day or evening, this unique oval brooch is hand made in platinum, with approximately 4 carats of old European cut diamonds. A lovely marriage of geometric art...

Category

Early 20th Century Art Deco Ostertag Brooches

Materials

Diamond, Emerald, Platinum

An Art Deco diamond and emerald double clip brooch

$13,166

W 0.83 in L 1.97 in

An Art Deco diamond and emerald double clip brooch

Located in London, GB

An Art Deco diamond and emerald double clip brooch, consisting of two clips of geometric open-work design with scrolling details encrusted with old-European, Swiss and baguette cut d...

Category

20th Century British Art Deco Ostertag Brooches

Materials

Diamond, Emerald, 18k Gold, 9k Gold, Platinum

Art Deco Platinum Princess Emeralds Diamonds Brooch, 1920

$3,500

L 2.76 in

Art Deco Platinum Princess Emeralds Diamonds Brooch, 1920

Located in Herzelia, Tel Aviv

Art Deco Platinum Emerald & Diamond Bar Brooch, c.1920 Overview An elegant Art Deco platinum brooch featuring a vibrant princess-cut emerald as its centerpiece, framed by sparkl...

Category

1920s Art Deco Vintage Ostertag Brooches

Materials

Diamond, Emerald, Platinum

Art Deco Emerald and Diamond Brooch Clips circa 1920s in Platinum

$11,750

W 0.93 in L 1.11 in

Art Deco Emerald and Diamond Brooch Clips circa 1920s in Platinum

Located in Wailea, HI

Art Deco Emerald and Diamond Brooch Clips Circa 1920's in Platinum Two Cushion Cut Emeralds Weighing .70 Carats Approximately Two Old European Cut Diamonds Weighing .65 Carats Appro...

Category

Early 20th Century Unknown Art Deco Ostertag Brooches

Materials

Diamond, Emerald, Platinum

Mauboussin Art Deco Diamond Emerald Sapphire Brooch

$168,500

Mauboussin Art Deco Diamond Emerald Sapphire Brooch

By Mauboussin

Located in New Orleans, LA

This Mauboussin Art Deco brooch presents a floral vase motif rendered in diamonds, emeralds, sapphires and black enamel. The center of each of the five flowers is highlighted by a la...

Category

20th Century French Art Deco Ostertag Brooches

Materials

Diamond, Emerald, Sapphire, Platinum, Enamel

Art Deco Emerald Diamond Platinum Brooch

$5,200

L 3.7 in

Art Deco Emerald Diamond Platinum Brooch

Located in Beverly Hills, CA

An elegant brooch from the late 1920’s showcasing vibrant green emeralds and dazzling white diamonds. The emeralds are each cut in a classic emerald shape, weighing a total 1. carat,...

Category

21st Century and Contemporary American Art Deco Ostertag Brooches

Materials

Diamond, Emerald, Platinum

Previously Available Items

Platinum Diamond Interchangeable Gemstone Art Deco Clip Brooch Arnold Ostertag

Sold

H 1.3 in W 1.38 in

Platinum Diamond Interchangeable Gemstone Art Deco Clip Brooch Arnold Ostertag

By Ostertag

Located in Zurich, Zollstrasse

AN ART DECO DIAMOND DOUBLE CLIP BROOCH, BY OSTERTAG, 1930s, Of stylised shield outline, with pave-set brilliant cut Diamonds and Baguette Diamonds. The brooch features a square centre stone that is interchangebale. Blue Topaz 8.45 ct, white Crystal Quartz 7.35 ct, Amethyst 6.95, Tourmaline 7.50 ct, Onyx 9.90 ct and pink Topaz 7.65 ct. Dimensions: 3.50 cm x 3.30 cm. Weight without centre gemstone: 13.25 grams. The brooch can also be worn with a 18 K white Gold multistand necklace, 25.40 grams. The necklace is not original from the brooch and period but makes it much more wearable. Length of necklace: 43 cm. Comes in original box! Ostertag was founded in the 1920’s by Swiss-born Arnold Ostertag...

Category

1920s French Art Deco Vintage Ostertag Brooches

Materials

Amethyst, Diamond, Onyx, Quartz, Tourmaline, Platinum

OSTERTAG Beautiful French Art Deco Double Clip Brooch

Sold

OSTERTAG Beautiful French Art Deco Double Clip Brooch

By Ostertag

Located in New York, NY

A French Art Deco double clip brooch by Ostertag circa 1930’s. The brooch is designed as a double scroll and composed of 122 round-cut diam...

Category

Early 20th Century Art Deco Ostertag Brooches

Materials

Diamond, Platinum

Ostertag brooches for sale on 1stDibs.

Find a range of Ostertag brooches available on 1stDibs. Each of these unique items was designed with extraordinary care, often using platinum. While looking for the most stylish antique or vintage Ostertag jewelry to pair with your ensemble, you’ll find that Ostertag diamond brooches, from our inventory of 2, can add a particularly distinctive touch to your look. We have 2 pieces in this collection as well as a number of other designs by this jeweler. While this collection reflects work that originated over various time periods, most of these items were designed during the 20th century. If you’re looking for additional options, many customers also consider brooches by Cartier, LaCloche, and Marchak. Prices for Ostertag brooches can differ depending upon gemstone, time period and other attributes. On 1stDibs, the price for these items starts at $18,900 and tops out at $110,000, while pieces like these, on average, can sell for $64,450.