aggregate
albite
alkali
aquamarine
beryl
beryllium
chalk
cluster
crystal
crystalline
crystals
feldspar
garnet
gem
gemology
gemstone
geological
geology
glass
glassy
granite
hydrothermal
lapidary
mineral
mineralogy
moonstone
nature
opaque
ore
pegmatite
plagioclase
quartz
rare
rare earth
rock
sample
silicate
sodium
specimen
spessartine
stone
transparent