Recently, however, this testing institution, official website, was hacked and its database was lost.

I met a seller on Taobao who once showed the certificate of this testing organization, but the inquiry address was not official website of this organization at all, so I couldn't inquire after entering the data.

So I suggest you enter the official website of this institution through Baidu, and then conduct an audit.

It is basically reliable if it can be rechecked in official website.

Obsidian products have large inventory and low market value. Most of the common obsidian and ice obsidian products on the market are genuine.

However, most of the ice obsidian is treated at high temperature, which of course does not affect its market value and is also allowed by national standards.

The price of Obsidian Bodhisattva pendants in 500 yuan is a bit high, unless the material is particularly good and the technology is particularly good, but even so, it belongs to the general market retail price.

It is recommended to visit Taobao.

I hope to have some reference.

Good luck!