Revision as of 13:03, 24 April 2021

• SiC moissanite

• C diamond
• Si, pure silicon
• Ge, pure germanium (rare)
• grey tin (odd)

• ZnS zinc sphalerite - 4.2g/ccm . Mohs 3.5 to 4 (soft)

Misc

Also a very simple but different (odd) cubic structure: Cu₂O cuprite.

Related

• Simple crystal structures of especial interest