the pearl is the certain shellfishes which receives substance enters in the sea or fresh water , with the friction stimulation, but in vivo secretion's pearl fluid layer upon layer wraps the round bead body which the foreign substance forms.
The chemical composition is mainly the calcium carbonate, the pearl according to the different deliver the pearl divided as seawater pear , freshwater pearl and the cultivate pearl, according to color the pearl is separable two kinds of material one basis color for white bead and the other kind of pearl basis for black bead, varicolored bead.wholesale pearl jewelry
