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Expert in vintage costume jewelry from the 1920s, 1930s, 1940s & 1950s

Brooch dress clips with amethysts in rose gold
Center of Duette
Back of double clip brooch
Separate dress clips
Back of dress clips
Maker's marks
Maker's marks

Amethyst, Diamanté & Rose Vermeil Duette



SIZE: Brooch: 1 3/4" x 2"; dress clip: 1 x 1 3/4"

CONDITION: Excellent (see description)

DATE: 1942-1948 (based on use of pink-gold-plated sterling, per Brunialti)

MARKS: "Sterling" and "Coro-Craft" (in script) with Pegasus on rectangular cartouche; "Coro Duette" (in script), "STERLING" and PAT. 1798867" on frame


This brooch/dress clips looks like folded fabric crowned with jewels. It is made of rose-gold-plated sterling silver edged with diamanté accents. At the center of each side is a row of amethyst-glass navettes topped with a row of diamantés. This Duette, which was created for Coro’s high-end line, can be worn as a brooch or as separate dress clips. Their double-prong fasteners work well with heavier fabrics, such as wool blazers and dresses. My camera picked up two stones that appear to be a different shade of purple, but this difference cannot be seen by the naked eye. You can see the utility patent for the brooch mechanism here, shown below Coro’s name.

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Amethyst, Diamanté & Rose Vermeil Duette

$295.00 USD
Why Buy Vintage Costume Jewelry?

One reason is that it’s environmentally friendly. Resale fashion and vintage jewelry has become a preferred sustainable and affordable shopping choice by today’s discerning fashion and eco-conscious consumer.

Another major reason is the quality. Although vintage costume jewelry was made for all levels of the marketplace – from dime stores to high-end fashion boutiques and jewelry stores – you will find only the best pieces here. They were well-designed and carefully made to last. The manufacturers represented here used only the finest materials – glass stones and beads from Bohemia, Austria, and France, and faux pearls from France and Japan. Settings were primarily sterling silver, gold-filled, or base metals heavily plated with gold, silver, or rhodium. Stones were hand-set, and pieces were hand-finished.

The northeastern part of the U.S. was the center of the industry, with the largest companies located in Providence, Rhode Island by the end of World War II. During the Depression, the quality of costume pieces climbed to new levels when many jewelers and craftsmen had to switch to this segment of the industry. In addition, it attracted many skilled workers who fled the political situation in Europe for the U.S. For these reasons, designs and manufacturing techniques rivaled those employed in the making of fine jewelry.

A third reason to buy costume jewelry is its uniqueness. Having survived for so many decades in such wonderful condition and having been selected for their aesthetic quality, the pieces you’ll find here are unlikely to be found elsewhere.

True vs Fake - how to shop vintage costume jewelry with confidence

Barbara Schwartz, a noted costume jewelry historian, is the author of "True vs Fake" , an in-depth blog series providing examples of how vintage costume jewelry can be accurately attributed. She also shares tips on how to avoid being duped into buying misidentified vintage costume jewelry.