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Harvest time: Even before the arrival the following year, usually the beginning of the year, or 11 months to February the following year. High-temperature season in general do not accept beads, because in a period of high temperature deposits nacre fast, loose texture, Pearl white, the surface is often covered with a layer of material (aragonite crystal Dissolved), luster dull, poor quality. In the winter or low temperature conditions, the Pearl nacre secretion slowed down, the surface nacre more detailed, smooth, shiny is better, and therefore the best time to harvest Pearls.
Close bead method: In order to ensure the quality of Pearls collected, in the income beads, should sampling nacre thickness, in accordance with international jewelry convention, the harvested Pearls of various specifications of goods, their bead thickness has the following criteria:
Fine bead: bead diameter 2.6 '4 .9 mm, thickness 0.3 mm beads;
Beads: bead diameter 5.0 '6 .4 mm, thickness 0.5 mm beads;
The bead: bead diameter 6.5 '7 .9 mm, thickness 0.8 mm beads;
Large bead: bead diameter 8.0 millimeters above, Pearl thickness 1.0 mm;
Sampling inspection, if the development of bead-layer thin and not reach the required standard business would be appropriate to extend the period of sterile beads.
Received beads method is based on interpolation of nuclear workers carried out before and after the order to close one end of a re-accept it, Shun and so on. Fetch from the sea after the sterile Pearl, with a knife from the ventral edge of open-shell openings into the body shell, cut the adductor muscle force, exposing the software department to clamp or knife and gently insert the sterile beads bag, carefully remove the Pearl from the bag .
Harvest: the harvest Pearl, generally based on sterile Pearl 10000 Pearl harvest the amount of how much that Japan Prefecture in 1974 for every 10000 sterile Pearl, Pearl harvest the highest up to 13 kilograms, a Pearl of China's Zhanjiang farm 1970'1978 in respect of each sterile Pearl 10000 Pearl harvest, the highest up to 11.15 kilograms, a minimum of 4.85 kilograms. Indicates that our Pinctada Pearl farming, has reached or come close to the world production of cultured Pearls the level of advanced countries.
Jewelry has quickly developed in recent years. It has lot of forms such as costume jewelry, earrings and necklace and so on. The jewelry varies from material such ad Coral jewelry, Pearl jewelry or the widest range of gemstone jewelry.