Preliminary identification
Photo reference
3 uploaded photos
Overview
A striking dimensional dome brooch by Coro, featuring a massive faceted oval amethyst-purple glass center surrounded by concentric tiers of prong-set navette and chaton rhinestones in gold-tone metal. The reverse shows the classic scripted 'Coro' hallmark and a riveted dome construction.
Story
Founded in 1901 Manhattan by Cohn and Rosenberger, Coro defined Mid-Century glamour. This tiered sunburst design gave everyday post-war women a taste of Fifth Avenue royalty right on their lapels.
Maker / Origin
Emanuel Cohn and Carl Rosenberger formed Coro in New York, growing it into one of the largest costume jewelry manufacturers in the world by the mid-20th century. Known for innovative mechanisms like 'Duettes' and vibrant crystal work, Coro captured the democratization of fine jewelry.
Condition & Value
Very good vintage condition with bright plating and tight prong settings. Minor surface dust and faint flea bites on glass facets typical of age. Sound condition maintains steady collector appeal.
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Sold comps, value drivers, and venue guidance pulled from recent auction results.
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Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.