the pearl may divide into the sea water drop and the pale water drop. The sea water pearl jewelry produces in the pure sea water, the bead nature is good, the gloss is gentle, is transparent. But the pale water drop produces in the rivers, in the lake, bead nature Bai Zhong dodges generally the ash, freshwater pearl jewelry is quite opacitas, the gloss is not gentle. The sea water drop pellet is big, the outward appearance rule, the round bead are many, but the pale water drop pellet is small, mostly assumes the ellipse or the anomalous shape, the superficial common thread. Moreover, in the sea water trace element is more than the pale water drop generally, therefore the sea water drop's value is higher than the pale water drop.
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