Cultured pearl classification as a precious gemstone dates back more than a century in the fine jewelry industry. The question was contested early in cultured pearl production's history and resolved in favor of classification.
Care & Keeping
Clutch backs are standardized components rather than bespoke fittings, which is what makes replacement practical. A jeweler or jewelry retailer carries replacement backs in yellow gold, white gold, sterling silver, and platinum, and the fitting requires no alteration to the earring itself.
Industry Insight
The fish hook clasp goes by several names (hook and eye, shepherd's hook) but the logic is consistent. Here, there's a curved hook, a receiver, and enough tension to hold.