(1) It can be seen that in the process of rock crystal formation, it is usually covered by environmental influence. When you look at the sun, you can see weak uniformity and small level or willow trees. Pseudocrystals are used for crystals and glass for melting. After polishing, coloring forms a pattern. There are no uniform stripes, like willows.

(2) Tongue: Even in the dog days of hot summer, licking the surface of rock crystal with your tongue will still give you a cool feeling. Fake crystal, no cool feeling.

(3) Light: When the crystal stone is placed in the sun, it can release beautiful light from any angle. Fake crystals don't work.

(4) Hardness: the hardness of rock crystals, and the jewelry is lightly painted with gravel without leaving traces; If there are column marks, this is a fake crystal.

(5) Inspection with a polarizer: It looks like a natural crystal when rotated 360 degrees under the polarizer, and the pseudocrystal has not changed.

(6) Two-color test: natural amethyst has two colors, while fake amethyst does not.

(7) Inspection with a magnifying glass: inspect the transmitted light with a magnifying glass of 10 times. It can find bubbles that can basically be classified as fake crystals.

(8) check with hair: put the crystal on the hair, and the human eye can see the twisted hair of the crystal. It is a natural crystal, mainly because the crystal has birefringence.

(9) Thermal conductor test: set the thermometer to green 4 to test the gem, the rock crystal can rise to yellow 2, and the false crystal does not rise. It will turn yellow when the area is large.