Cuprite single crystal (natural) ( Cu2O ) Copper oxide

Cuprite Cuprite
Cuprite Cuprite
Crystal Properties    
Crystal growth method Natural  
Crystal orientation (001) (100) (110) (111) others on request  
Maximum size up to 10 x 10 mm, standard 4 x 4 mm  
Crystallographic properties a = 4,27 Å
V 77.77 Å
Z = 2
 
Crystallographic symmetry cubic (4/m 3 2/m)  
Crystal system Cubic hexocathedral  
Twinning structure no, except natural defects  
Mohs scale hardness 3.5 to 4  
Diaphaneity Transparent, translucent  
Specific gravity 6.14 g/cm3  
Colour Dark red to conchineal red  
Refractive index n = 2.849  
Pleochroism Visible