A
agate
alexandrite
amber
amethyst
aquamarine
aventurine
azurite
B-C
basalt
beryl
calcite
carat
carnelian
chalcedony
citrine
coal
coral
crystal
D-E
density
diamond
dolomite
druze
emerald
F
facet
feldspar
fire opal
fluorite
fool's gold
fossil
G
garnet
gem
gemstone
geode
geology
gneiss
gold
granite
gravel
gypsum
H-I
hardness
hematite
howlite
igneous rock
inclusion
J-K
jade
jadeite
jasper
jet
karat
kunzite
L
labradorite
lapidary
lapis lazuli
lava
limestone
lithified
loess
luster
M
magma
magnetite
malachite
metamorphic rock
meteoroid
mica
mineral
moonstone
moss agate
N-P
nephrite
obsidian
opal
orthoclase
pebble
peridot
petrified wood
pumice
pyrite
pyroclastic flow
Q-R
quartz
rock
rock cycle
rose quartz
ruby
S
salt
sand
sandstone
sapphire
sard
sardonyx
schist
sedimentary rock
seismograph
semi-precious
serpentine
silica
silt
soapstone
sodalite
spinel
stalactite
stalagmite
stone
T
talc
talus
tiger's eye
topaz
tourmaline
tsavorite
turquoise
U-V
unakite
vitreous
volcanic bomb
volcanic glass
volcano
vulcanite
W-Y
wairakite
xalostocite
xenolith
xyloid jasper
yeatmanite
Z
zircon
zoisite