Contact: Gisele Galoustian
Florida Atlantic University
Caption: Conch pearls are formed by concentric layers of fibrous crystals, and this layering often produces the desired flame structure, which is characteristic of conch pearls. The pearls have a porcelain finish and luster like the interior of the conch shell, and come in a wide variety and combination of colors including white, red, pink, orange, yellow and brown. Queen conch pearls are measured in carats like traditional gemstones.
Credit: FAU's Harbor Branch Oceanographic Institute
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Related news release: Scientists are first to 'unlock' the mystery of creating cultured pearls from the queen conch