CORUNDUM
BERYL
TOPAZ
ZIRCON
CRYSOBERYL
RUTILE
SPINEL
TANZANITE
QUARTZ
OLIVINE
CORDIERITE
FELDSPARS
PYROXENES
TOURMALINE
GARNET
Precious Stones: OPAL, AGATE, LAPIS LAZULI
Precious Stones: MALACHITE, TURQUOISE, AZURITE
Organic Gems: PEARLS, CORAL, AMBER, IVORY, TAGUA
INDEX
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DIAMONDS, SYNTHETIC DIAMONDS,
DIAMOND SIMULANTS
Precious Stones: OPAL, AGATE,
LAPIS LAZULI
Precious Stones:
MALACHITE, TURQUOISE, AZURITE
Organic Gems: PEARLS, CORAL,
AMBER, IVORY, TAGUA
UW-Madison Geology and Geophysics Home Page
INDEX