Pyrope

Pyrope is a member of the garnet family. Please see the garnet page for images and videos.

The garnet family also includes almandine,  grossular, and spessartine.

Physical Properties
Chemical formula Mg3Al2Si3O12
Class Nesosilicate
Isolated tetrahedra
Crystal system Cubic
Habit Dodecahedral
Trapezohedral
Usually euhedral to subhedral
Color Red
Occasionally black
Hardness 7
Specific gravity 3.54
Cleavage None
Fracture Subconchoidal
Luster Resinous
Transparency Transparent to translucent
Streak White
Optical Properties
PPL High relief
Colorless or very pale
May appear mottled grey
XPL Isotropic
δ None
after Perkins, 338

Further Reading

Pyrope at webmineral.com

Pyrope at mindat.org