Luster: The main criteria to be in the most important pearl jewelry gloss, as if the radiance lit from within, as pearls add a layer of mystery, with her more vitality, moving movable. Custody of akoya pearl beads , the gloss is to be in the clear indication of their quality, because only through multi-nuclear-secretion of pearls wrapped in heavy bloom dispatched people to glory.
Colours: pearls jewelry color choices are all up to personal taste preferences, of course, which colours to pink, white, light, and so on, or popular because of their rare and unique market value, but basically the color of a pearl is not important for quality assessment.
Shape: general shape of a perfect pearl is the more elegant style graphics or drop-shaped, but Similarly, the shape of choice is personal preference, the pearl will depend largely on quality rather than to be in complete form.
Surface: In principle, on the surface, the fewer potholes dot, the higher value of the pearls, but in general even if valuable pearls are more or less the surface there are some minor flaws Bailey, the perfect pearl is very rare.
Size: that is, generally speaking, the greater the value of pearls volume higher, but some deformation and-except, again the volume is not assessed a major factor in the quality of pearls, pearl small, should choose the face figure and tall as the basis, So when decided a pearl's quality, luster should be focus on rather than size.
The difference between freshwater pearl and akoya pearl.
Freshwater pearls and sea water pearls's cultured technology are different, so the structure is different. Is the denuclearization of freshwater pearls, pearls are all the elements of composition, so if made of freshwater pearls pearls, and there is no other material mixed. The akoya pearls are the nuclear, general nuclear pig mussels from the shells ground into, only covered in the Pearl of the surface, 0.1 to 0.3 mm thick, growing about a year (fresh water beads up to 4 to 5 years), so if make akoya pearl into powder, there is only a small number of quality pearls, mostly shell powder, if use this pearl powder into medicine, how will be the effect?It seems that no research in this area. Freshwater pearl powder contained in the amino acid cystine addition, valine, tyrosine slightly lower than the akoya pearl powder, methionine flat, the other 13 types of amino acids are higher than akoya pearl powder.