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gia.edu > gems-gemology > spring-2026-organic-rich-cores-in-south-sea-keshi-pearls

Diverse Range of Organic-Rich Cores in South Sea Non-Bead Cultured “Keshi” Pearls

2+ week, 22+ hour ago   (424+ words) Nishka Vaz, Abeer Alalawi, Anukul Belanke The internal structures of these samples were further categorized into four subgroups, with four pearls selected from each group as representative examples based on the radiopacity and pattern of features they showed in RTX…...