41. Most beadless cultured pearls are mantle-grown in freshwater shells in China, and are known as freshwater cultured pearls . 42. Most beadless cultured pearls are mantle-grown in freshwater shells in China, and are known as freshwater cultured pearls. 43. Pendants include silver teardrops, cultured pearl drops, disks centered with cubic zirconia and a large oval-cut smoky topaz. 44. Therefore, a Keshi pearl could be considered superior to cultured pearls with a mother of pearl bead center. 45. Cultured pearls dominate the U . S . market, and half of them come from Japanese Akoya oysters.46. The nucleus bead in a beaded cultured pearl is generally a polished sphere made from freshwater mussel shell. 47. Sibani has a private collection of classic cultured pearls and a few " not so nice " natural ones. 48. In 1921 Murakami and Gregory formed a joint venture to produce cultured pearls , however government intervention scuppered the plans. 49. However, it is more abundant than the South Sea pearl, which is more valuable than the black cultured pearl . 50. Cultured pearls are formed by placing an irritant into the shell of an edible shellfish such as an oyster.
