( 1 ) Seeing: natural crystal in the formation process, often influenced by the environment always contains some impurities, when viewed against the sun, you can see faint stripes or even small catkin-like substance. The fake crystal jewelry 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 dog days of summer, tongue licking the natural crystal surface, but also cold and cool feeling. False, no cool feeling. Need Millennium Cut Citrine.

 

 

( 3 ) Lighting: natural crystal jewelry heel in the sun, no matter from which angle you look at it, can emit a beautiful luster. You can not fake.

 

 

( 4 ) Hardness: hardness of natural crystal, jewelry gently with gravel in the draw, for no traces; if left streak, it is a fake.

 

 

( 5 ) using polarized light microscopy: rotate 360 ​​degrees in the polarizing microscope, four out four dark change is a natural crystal jewelry, no change is false.

 

 

( 6 ) with a two-color check: natural amethyst dichroism no dichroic false.

 

 

( 7 ) with a magnifying glass to check: the transmitted light with the times examined under a magnifying glass, can be found as the bubble basically false.

 

 

( 8 ) Check with the hair: the crystal ornaments on a hair, the human eye can see through the crystal double shadow of hair, was natural, mainly because it has a birefringence.

 

 

( 9 ) was detected with a thermal conductivity: the thermal conductivity meter adjusted to 4 cell test green stones, natural crystal can rise to yellow 2 cells, while the fake does not rise, when the area is large yellow rose to a grid.