(1) Seeing: natural crystal in the formation process is often affected by the environment always contains some impurities, viewed against the sun, you can see a touch of uniform and fine stripes or catkin-like substances. Leave the crystal more defective crystal residue, broken glass melting,
after polishing process, color copy is made, there is no uniform stripes,
catkin-like substance.
(2) tongue licking: even in the hot summer dog days, tongue licking the natural crystal surface, cold and cool feeling. Fake crystal, no cool feeling.
(3) light: natural crystal heel in the sunlight, regardless of the perspective from which it can emit a beautiful luster. Crystal can not leave.
(4) Hardness: The hardness of natural crystal gravel gently draw in the crystal, not leaving any traces; leave streaks, it is false crystal.
(5) using polarized light microscopy: the polarizing microscope to rotate 360 degrees, four out of four dark change is a natural crystal, no change is false crystal.
(6) checked with two colors: natural amethyst dichroism false Crystal dichroism.
(7) with a magnifying glass to check: check tenfold magnifying glass in transmitted light, can find the bubble is basically a fake crystal.
(8) hair examination: the crystal on a hair, the human eye be able to see through the crystal hair double shadow, is a natural crystal, mainly because of a birefringent crystal.
Detected by thermal conductivity meter (9): the thermal conductivity meter adjusted to a green four-cell test gemstones, natural crystals rose to Yellow 2 cell and leave the crystal do not rise, when the area rose to yellow style.
(2) tongue licking: even in the hot summer dog days, tongue licking the natural crystal surface, cold and cool feeling. Fake crystal, no cool feeling.
(3) light: natural crystal heel in the sunlight, regardless of the perspective from which it can emit a beautiful luster. Crystal can not leave.
(4) Hardness: The hardness of natural crystal gravel gently draw in the crystal, not leaving any traces; leave streaks, it is false crystal.
(5) using polarized light microscopy: the polarizing microscope to rotate 360 degrees, four out of four dark change is a natural crystal, no change is false crystal.
(6) checked with two colors: natural amethyst dichroism false Crystal dichroism.
(7) with a magnifying glass to check: check tenfold magnifying glass in transmitted light, can find the bubble is basically a fake crystal.
(8) hair examination: the crystal on a hair, the human eye be able to see through the crystal hair double shadow, is a natural crystal, mainly because of a birefringent crystal.
Detected by thermal conductivity meter (9): the thermal conductivity meter adjusted to a green four-cell test gemstones, natural crystals rose to Yellow 2 cell and leave the crystal do not rise, when the area rose to yellow style.
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