As for the left hand, only Obsidian wears the right hand. In fact, it's the same everywhere, except that the right hand often bumps against the crystal.

Supplement:

Crystal is a rare mineral, a kind of gem, and a kind of timely crystal, which belongs to the timely family in mineralogy. Its main chemical composition is silicon dioxide, and its chemical formula is SiO2. When it is pure, it forms colorless and transparent crystals, and when it contains trace elements such as aluminum and iron, it is purple, yellow and brown. After irradiation, trace elements form different types of color centers and produce different colors, such as purple, yellow, brown and pink.

Inclusion crystals containing associated inclusion minerals, such as frosted crystals and green ghosts, include rutile, tourmaline, actinolite, mica and chlorite.