I know obsidian better. Obsidian in general jewelry stores will be much more expensive. They are mainly OEM brands, and the overall cost performance is not very high. The main reason for buying obsidian is to buy natural obsidian with good quality, and generally good obsidian is rainbow-eyed obsidian, and the price is between 50 and 200 yuan. The better one is Jinsha obsidian, which is what we call obsidian. The price is 1000.