| 31. | South Sea pearl oysters were in limited supply in the Philippines, and Iwasaki s project initially struggled to survive.
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| 32. | On the inner side pearl oyster from Japan were used, while on the outer side Mexican shells were set.
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| 33. | A recent project to farm black pearl oysters has been successful at generating additional income for the island's people.
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| 34. | Because it did not grow in a pearl oyster it is not pearly; instead the surface is glossy like porcelain.
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| 35. | This technology, developed in Japan, involves artificially introducing beads into pearl oysters and letting the pearls develop over several years.
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| 36. | Aspein is likely responsible for directed formation of calcite in the shell of the pearl oyster " Pinctada fucata ".
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| 37. | But it takes six to eight years for a 10-millimeter pearl to form in a pearl oyster, according to Abbott.
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| 38. | The button merchant Isaac Azarael, awaiting a lost shipment of abalone shell and pearl oyster, is Katchor's lone fixed point.
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| 39. | Mitsubishi commenced pearl culture with the South Sea pearl oyster in 1916, as soon as the technology patent was commercialized.
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| 40. | The outer layer of pearls and the inside layer of pearl oyster and freshwater pearl mussel shells are made of nacre.
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