Why does obsidian change color?

Obsidian is a mineral. The powder will be white. Put the rope between the beads. After long-term friction, the rope will make some holes in the middle, but it will stick to the water because it is worn on the hand. The white powder layer remains in the middle of the beads. It is not white. Just white powder. It can be completed without any pipeline. If you wear it, it will become like this. Many crystals will do this, which is normal.

Extended data:

Obsidian can be processed into handicrafts. In addition, obsidian has the characteristics of glass, and its cross section is shell-shaped and very sharp. In the ancient stone age, it was used as cutting tools such as knives and arrows. Modern people use obsidian as a scalpel blade for surgery. When obsidian is heated above 65,438+0,000℃, it will become white particles with loose and porous texture due to the loss of water contained in it.

Baidu Encyclopedia-Obsidian

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