This gem variety of OLIVINE is called Peridot. It has a "Coke
bottle" green color.
AUGITE is a member of the Pyroxene Group. It is
dark in color and has 2 cleavage directions that meet at about a 90 degree
angle.
PYRITE is also called "Fool's Gold" because
it is often mistaken for gold. Pyrite, however, is brittle and powders
when hit with a hammer. It also has a greater hardness than gold and has a
lower specific gravity.
QUARTZ comes in a variety of colors and has a wide
range of habits.
