The manufacuturer recommends people should to use the jade expert flashlight to identify and distinguish the stand or fall of lapis lazuli.With professional the jade expert flashlight we can see the color of lapis lazuli is blue, the lapis lazuli mineral content  determines its color.The high quality lapis lazuli is pure blue color, with no crack and the quality of a material is very exquisite,it can be used to make jewelry.

Secondly,we can see the texture of the lapis lazuli.The lapis lazuli with dense texture are very sensitive and it has no cracks.We can’t see crack by naked eye,so we need to use a jade expert flashlight to illuminate to make it.If there are shine distributed in the pyrite evenly,it is means it is the high quality lapos lazuli .If the pyrite distributed on part to part,it will influence the texture,and the quality is poor if it has crack.

Lastly,we can see the volume of the lapos lazuli.The bigger volume means higher vavule under the same conditions