aragonite is orthorhombic

The faceted cut maximizes the stone's refractive index

united by a single thread in human tradition—each has been carried as a token of fortune across cultures and centuries

layered pink

Obsidian Palm Stone Amethyst aragonite is orthorhombicSmooth and cold in the handvolcanic glass polished to a mirror finish. Obsidian forms when silica rich lava quenches rapidly on contact with air or water, bypassing crystallization entirely. The result is a natural amorphous glass with conchoidal fracture, vitreous luster, and a hardness of 55. 5 on the Mohs scale. This palm stone is polished to a flat oval, both faces mirror smooth, the absolute blackness of the glass broken only by the pale