Preliminary identification
Photo reference
2 uploaded photos
Overview
This charming open-heart costume brooch is set with iridescent blue aurora borealis rhinestones in a gold-tone cup-chain frame, featuring an interior sweeping flourish. The stones flash with peacock blues, greens, and golds created by an ultra-thin metallic vapor coating.
Story
In 1955, Christian Dior partnered with Swarovski to coat crystal in vaporized metal, creating the shimmering 'Aurora Borealis' effect. This mid-century brooch brought that exact high-fashion Parisian magic to everyday jewelry boxes.
Maker / Origin
While unsigned, this piece reflects the prolific mid-century costume jewelry manufacturing boom in centers like Providence, Rhode Island, and Gablonz, Germany. Makers like Coro, Trifari, and countless regional workshops produced dazzling, accessible glamour for post-war department stores.
Condition & Value
Appears to be in very good vintage condition with all rhinestones intact, bright iridescence, and a functional safety clasp. Very minor surface patina on the gold-tone reverse consistent with age. Intact stones preserve full collector value.
Full Research
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.