Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
red spinel crystals-1
Spinel crystallizes
in the Isometric system and usually forms octahedron crystals.
Spinel has a
hardness of 8 and occurs in a wide range of colors.
Clear, colorful forms of
spinel are faceted for jewelry.
spinel
crystals1
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.