Hemimorphite is a zinc mineral, of the silicate class, subclass of sorosilicates. In the past it was called calamine and used as a powder in a lotion to soothe skin irritations. In Europe it was known, however, as smithsonite. Its name means "half shape", allusion to its crystals which are not symmetrical but rounded at one end and pointed like a pyramid at the other.
Dimensions
Stones thickness (cm): 0.7
Bracelet diameter (cm): 5.4
Weight (g): 9
Property
Chemical Formula: Zn4Si2O7 (OH) 2 (H2O)
Mohs scale: 4.5 / 5.5
Relative density: 3/4
Crystalline System: Trimetric
