First, look at luster
The lusters of layer of reflective pearl iridescence reflected by the pearl jewelry formed by different causes are not same when seen the surface or internal. The saying goes, "zhuguangbaoqi ", requires a combination of physical carefully taste, luster of discount pearl jewelry mainly reflected from the Pearl's internal delicate structure layer, and after the diffraction light generated by special luster to this gloss away from direct light in the dark can be observed under light, which is similar to the dark horizon gemstones under a microscope, observed the growth of the internal lines and inclusions. The strength of freshwater pearl which reflected the layer thickness in low-light illumination is especially clear. Thin Plastic reflecting the bright light but the craft beads coated with gloss paint has certain deceptive character, should be identification carefully.
Second, observe the surface characteristics of pearl
The number of fashion Pearl surface defects directly affects the beauty of pearls, but rarely flawless pearls, each pearl a different flaw, it is just the birthmark that different from other pearls, which providing the evidences for identify the pearl .
The flaw of pearl showed as the flaw drop and rings .when foreign body penetrated between the pearl layers, a flaw drop will be bulged on the pearl surface .sometimes a 10 times magnifier are needed ,through the carefully observation , always can find some ring phenomena.
Third, touch the beads
The fake bead feels greasy while the true one clear.Pearl necklace will be nice and cool.
Fourth, use teeth for grinding test, or two beads
As mentioned above, a pair of plastic bead will slip when grinding. but scrub pearl along the teeth of the peaks will be a sense of sand, if a good bead, this sense of special uniform sand, feeling simply wonderful, this is because the composition of nacre crystals arranged in a orderly, just as rugged as the roof panels arranged in neat rows, jargon is called imbricated arrangement, so friction will make people feel as if there is sand-like .