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100 Inch AA 7-8mm Pink Akoya Cultured Pearl Necklace

Currency:USD Category:Collectibles Start Price:300.00 USD
100 Inch AA 7-8mm Pink Akoya Cultured Pearl Necklace
100 Inch AA 7-8mm Pink Akoya Cultured Pearl Necklace 300+ Beads Size:7-8mm Length: Clasp:18k GP Cultured Freshwater Pearls Freshwater pearls are farmed and created using freshwater mussels. These pearls are produced in Japan and the United States on a limited scale. The U.S....Federal Trade Commission...requires that farmed freshwater pearls be referred to as "freshwater cultured pearls" in commerce. Quality of cultured freshwater pearls is evaluated through a grading system of a series of A values, based on...luster, shape, surface, color, color and matching ... Pearls gathered in the wild from the...Holarctic...freshwater pearl mussel...were important sources of pearls for...medieval jewelry, with...Scotland...a major source; this species is now endangered in most areas. Although the Japanese freshwater pearl industry has nearly ceased to exist, it has a special historic place as the first country to cultivate whole freshwater pearls, which it did in...Lake Biwa, using the Biwa pearly mussel (Hyriopsis...schlegeli). The industry attempted a comeback with a mussel hybrid (Hyriopsis schlegeli/Hyriopsis cumingi) in...Lake Kasumigaura...in the last decade, but this venture also met with failure, with production ceasing in 2006. The pearl farm in...Tennesseealso holds special historic value as it is the only freshwater pearl outside of Asia. Founded by the late...John Latendresse, it continues as a tourist attraction. Today...China...is the only commercial producer of freshwater pearls, producing 1500 tons (2005)...using the triangle shell mussel (Hyriopsis cumingii) and several hybrids that have shown...heterosis...from several mussel species Akoya:... A...pearl...is a hard glistening object produced within the soft tissue (specifically the...mantle) of a living...shelled...mollusk...or another animal, such as a...conulariid. Just like the shell of a mollusk, a pearl is composed of...calcium carbonate...(mainly...aragonite...or a mixture of aragonite and...calcite)...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. The finest quality natural pearls have been highly valued as...gemstones...and objects of...beauty...for many centuries. Because of this,...pearl...has become a...metaphor...for something rare, fine, admirable and valuable. The most valuable pearls occur spontaneously in the wild, but are extremely rare. These wild pearls are referred to as...natural...pearls....Cultured...or...farmed...pearls from...pearl oysters...and freshwater mussels make up the majority of those currently sold....Imitation pearls...are also widely sold in inexpensive jewelry, but the quality of their...iridescence...is usually very poor and is easily distinguished from that of genuine pearls. Pearls have been harvested and cultivated primarily for use in...jewelry, but in the past were also used to adorn clothing. Â