How to distinguish the true and false Ziyun mother stone

First of all, you go to the identification, although they may not be able to draw accurate conclusions, but the report is a drop, you can check.

This gem is of cryptocrystalline structure, glassy and opaque. Here is the aphanocrystalline.

The refractive index is between 1.70 and 1.706, the relative density is 2.582 to 2.94, and the hardness is about 4.

Its main chemical composition: P-2O-5, Fe-2O-3.