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How to identify crystal handicraft is artificial or natural?

by:Noble Awards     2020-08-23
Crystal handicraft is artificial crystal with two kinds of natural crystal, here is the identification method: 1, see: natural crystal in the process of formation, is often affected by environment, there will always be some impurities observations of the sun, you can see the light evenly tiny horizontal stripes or catkin substance. And false crystal with defective crystal, glass melting slag, after polishing processing, coloring imitation, no catkin stripes, material. 2, tongue licking: even in the hot summer dog days, natural crystal surface with his tongue, cold, cool feeling, too. Fake crystal,, no cool feeling. 3, lighting: natural crystal stand in the sun, no matter from which point of view, it can let out a beautiful light. Fake crystal cannot do. 4, hardness: natural crystal hardness, gently with gravel on the accessories, don't leave a trace; If have stripes, is artificial crystal. 5, with a polariscope check: turn 360 degrees under polarizer siming four dark change is natural crystal, no change is artificial crystal. 6, with two color check: natural amethyst dichroism, fake crystal no dichroism. 7, use a magnifying glass check: with ten times the magnifying glass check in transmitted light, can find basically can be classified as false crystal of bubbles. 8, with hair check: crystal on a human hair, double the eye through the crystal can see a human hair, natural crystal, mainly because of crystal birefringence. 9, with thermal conductivity instrument detection: thermal conductivity meter to adjust to the green 4 g test gem, natural crystal can rise to yellow 2, whereas false crystal does not rise, when large area rose to the yellow one.
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