Laboratory grown in Germany.

Highly refined bismuth forms these interesting "hopper" crystals when grown under laboratory conditions. The colors are formed by a thin oxidation layer. Although these crystals are not found in nature, their appearance is so exceptional and unusual, we wanted to present them here. Bismuth is a strange element. It is the most diamagnetic (opposes magnets) of all the elements, and some scientists have noted that it doesn't quite react normally to gravity.

Synthetically grown.

More information on gemstone enhancements.