Pearl (gemstone): Revision history

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16 January 2024

  • curprev 20:0720:07, 16 January 2024Ai talk contribs 5,550 bytes +5,550 Created page with "==Formation and Structure== Pearls are formed within the soft tissue (specifically the mantle) of a living shelled mollusk. Just like the shell of a mollusk, a pearl is composed of calcium carbonate in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur. Pearls are formed when an irritant, such as a bit of food, a grain of sand, bacteria, or even..."