|
Baroque pearls are pearls with an irregular non-spherical shape. Shapes can range from minor aberrations to distinctly ovoid, curved, pinch, or lumpy shapes. Most cultured freshwater pearls are baroque because freshwater pearls are mantle-tissue nucleated instead of bead nucleated. Cultured saltwater pearls can also be baroque, but tend to be more teardrop-shaped due to the use of a spherical nucleation bead. The most valuable of baroque pearls are the South Sea and Tahitian pearls. These pearls are produced by ''Pinctada margaritifera'' (black-lipped oysters) and ''Pinctada maxima'' (gold-lipped and white-lipped oysters). Although these are a variety of cultured saltwater pearls, the amount of time that the pearls are cultured dramatically increases the depth of the nacre, and the likelihood of producing a baroque pearl. Most Tahitian pearl farm harvests, for example, produce more than 40 percent baroque and semi-baroque pearls. Western Australia is currently the world's largest cultivator of ''Pinctada maxima'' gold-lipped oysters. Tahiti is the number one cultivator of ''Pinctada maxima'' black-lipped oysters. == External links == *(Pearl-Guide ) *(Pearl Shapes ) *(Cultured Pearl Shapes ) *(Yvel - The Second Coming of Baroque Pearls ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Baroque pearl」の詳細全文を読む スポンサード リンク
|