Male and Female Siamese Twin Crystal Group – NBB 139

Description:  A siamese twin crystal group, consisting of a male and female crystals. The male crystal (with the sharp termination) has a small moving bubble in the main termination face. The crystals have very faint patches of smoky colouring and lovely gas inclusions. The terminations have a few very small to small nicks while there is some damage to the bottom section, where it parted from its matrix.

Chemical Composition:  SiO₂

Hardness on Mohs Scale:  7

Location:  Brandberg, Namibia

Specimen Code:  NBB 139

US $ 55