1, transparent observation color
True obsidian is not black under the irradiation of strong flashlight, but will appear dark brown or dark brown yellow; False obsidian will appear glass blue under light transmission.
2. Look at the luster in natural light
True obsidian doesn't look like a glass mirror, but the glass surface of fake obsidian is particularly reflective, especially from the back of the sculpture.
3, observe the edge contour
For real obsidian jewelry, because it is carved on the background, and the hardness is low, it will lose subtleties when polishing, especially the shape of the edge, resulting in a weak three-dimensional sense. Fake obsidian is directly cast with glass, which belongs to one-time molding, so it has a strong sense of outline and is concave and convex.
obsidian
Obsidian has the characteristics of glass, and its cross section is shell-shaped and very sharp. Most obsidian jewelry is produced in Central and North America, but also in China and Tibet. It has been used as an evil spirit and amulet since ancient times. Obsidian, also known as "Dragon Crystal", is a common amorphous gem and volcanic crystal. Its main component is silicon dioxide, usually black.
Obsidian is mostly distributed in areas with volcanic activity, such as Hawaii, Japan and Java Island in the United States, as well as Iceland, Hungary, Lipari Islands in Italy, the former Soviet Union, Mexico, Ecuador and Guatemala, and Tibet in China.