Nov 16, 2007

Sea To Market - Journey Of A Pearl!

Sea To Market - Journey Of A Pearl 1
Pearls are formed inside certain bivalved mollusks. As a response to any external stimuli, the mollusk creates a pearl to seal it off.
The mantle of the mollusk deposits layers of calcium carbonate in the form of the minerals aragonite or calcite (both crystalline forms of calcium carbonate) held together by an organic horn-like compound called conchiolin. This combination of calcium carbonate and conchiolin is called nacre, or as most know it, mother-of-pearl. The commonly held belief that a grain of sand acts as the external stimuli is in fact rarely the case. Small particles or organisms enter the animal when the valves are open for feeding or respiration. In cultured pearls, the stimuli is typically a cut piece of the mantle epithelium, together with processed beads, the combination of which the animal accepts into its body.
Sea To Market - Journey Of A Pearl 2
Sea To Market - Journey Of A Pearl 3
Sea To Market - Journey Of A Pearl 4
Sea To Market - Journey Of A Pearl 5
Sea To Market - Journey Of A Pearl 6
Sea To Market - Journey Of A Pearl 7
Sea To Market - Journey Of A Pearl 7
Sea To Market - Journey Of A Pearl 8
Sea To Market - Journey Of A Pearl 9
Sea To Market - Journey Of A Pearl 10
Sea To Market - Journey Of A Pearl 11
Sea To Market - Journey Of A Pearl 12
Source: 1 & 2.

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