Artificially crystallized bismuth of a metallic color with multicolored flashes.
Bismuth is found in very small proportions on earth, it is as scarce as silver.
In medicine, bismuth by-products are applied as an antidiarrheal agent and for stomach problems. It has also been used in cosmetics and as a pigment.
The mineral includes a label with the name and origin and is attached to a cardboard box. 4 cm square.
*The price is per unit (a single cardboard box of the four shown in the photo)
Since the minerals are natural, you will receive a piece similar to the one in the photograph. The minerals come in cardboard boxes and are glued to a porex base with hot silicone; these can be removed using ethyl alcohol without damaging the mineral. The size is approximate.