Is it true that Blackstone Yao Hu Yanshi sold online? How to tell?

Regarding the authenticity of obsidian, if there is a rainbow eye, it must be true, because only obsidian has this feature, and it cannot be made by hand. Double rainbow eyes are the best, followed by single eyes. If there is no rainbow eye, it may be inferior, or it may be made of dyed black agate or ABS. Be careful when you buy it.

As for the tiger's eye stone, it is best to have a cat's eye effect (that is, a reflective effect). Of course, the cat's eye effect of beads is stronger, the distribution should be symmetrical, there is less noise, and there are no cracks and spots.

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