Pearls in the birth stone, is not a natural gems, it generates some shellfish (LEA ) and failure to exclude, its cell membrane will secrete pearl quality liquid will foreign layers to constantly wrapped up, long beads. Because every time the wrapping nacre layer is very thin, therefore a pearl even by thousands of layer nacre parcel superposition, after 3-6 years of time to form. Seawater shellfish production pearl called water beads, chiefly Baidiebei, black butterflies Pui, freshwater pearl mussels in production called fresh water pearl, chiefly of Hyriopsis cumingii, that is, not all shellfish ( mussels ) are capable of producing pearls. Pearl production, according to geologist research 200000000 years ago, in the Triassic era began to proliferate after shellfish Pearl formation.
Pearl is the earliest human using one of the jewels. ” The Bible ” opening ” Genesis” records: from the garden of Eden out of the Pishon River, ” where there is a pearl and agate “. According to the ” Lotus Sutra “, ” Amitabha Sutra ” and other records, pearl is the ” Buddhist Qibao .”. China is the world’s first use of pearl is one of the countries, in Dayu era, will be ” South China Sea Chi bead Tony ” as a tribute, the Han Dynasty Guangxi Hepu has pearl industry. Pearl is the main component of calcium carbonate, accounting for 82-93%, the crystal was beaded or spearhead shaped, in each layer of the pearl layer of vertically arranged, radially to form dimensions, the formation of flash rainbow pearl its key role. Pearls also contain keratin protein 4-14%, water 2-4%, more than ten kinds of amino acid and 28 kinds of trace elements, selenium, germanium, which is rare for anticancer, anti-aging substance.
A fine grinding carved stones, and not expensive jewelry, and pearls from the oyster out without processing, the product shape excellent pearl can directly be precious ornaments, this is the biggest difference between pearl and Gemstone Beads. In addition, the pearl is a kind of valuable Chinese herbal medicine, has remarkable beauty, health care curative powers, this is the biggest advantage of pearl.