True and false identification of crystal ornaments

First, the simple method of identification 1, the proportion: the weight is too light must be false, so that can be ruled out of glass, plastic, acrylic and other imitations, but now there are more crystals on the market, its weight and natural Crystal is almost the same, hand-tested method is not easy to find true and false. Some special proportions are larger (heavier than the crystal) and belong to the purple lead glass.
2, look at the crystal: there are bubbles, it must be glass (melting crystal). With a growth line, it must be cultured crystal. Where there is glue and cotton, it is absolutely natural crystal.
3, price: crystal and natural gem grade crystal has one thing in common, is the crystal is extremely transparent, almost completely without stone, but the price is very different, usually crystal seed beads will be made of cutting surface, crystal Throughout, but the price is generally not too high. However, if he is really a natural gem, the price must be more than 100 yuan, depending on the crystal size.
4, feel: feel cold, there is no stone crystal crystal is basically false; natural crystal touch will have a greasy feeling, and synthetic crystal or glass will feel more cool.
5, inclusions: Crystals with inclusions will never be fake crystal, so buy crystal, ghosts and other intrinsic crystal can be absolutely assured, because the cost of such counterfeiting is very laborious, and the effect is also out It is easy to see through.
6, color: natural crystal color difference, a natural crystal can not be uniform in every part of the color, such as topaz, the market is very rare natural yellow crystal. Natural yellow crystals can be discerned in water. The natural yellow crystals appear in the water and their color is uneven. Usually a piece of color radiates to the whole piece of crystal is yellow, and crystal growth is absolutely uniform.
7, refractive index: the crystal placed in a dark place, the natural crystal color will be very bright, crystal color will be relatively dim, lack of pan-"spirit" sense, only a little bit of brightness. Everyone can compare natural white crystals and glass.
8, hardness: natural crystal hardness, with gravel gently dash on the jewelry, will not leave traces; if there are streaks, it is false crystal.
Second, the instrument detection 1, with a polariscope check: in the polarizer rotate 360 ​​degrees there are four dark changes in the natural crystal, no change is a fake crystal.
2, with two-color inspection: natural amethyst has dichroism, false crystal is not dichroism.
3. Use a magnifying glass to check: Use a ten-fold magnifying glass to check under transmitted light. Basically, you can find bubbles as fake crystals.
4. Detection with a thermal conductivity meter: The thermal conductivity meter is adjusted to a green 4 grid test gems. Natural crystals can rise to yellow squares, while false crystals do not rise. When the area is large, it rises to a yellow grid.

Stoneware Ceramic

Stoneware Ceramic,Ceramic Dinnerware,Coffee Ceramic Mug,Porcelainware Dinner Set

HANDAN OURAY I/E CO., LTD , https://www.ourayceramicware.com

Posted on