Group 1

emerald
jade
jet
garnet
malachite
gypsum
obsidian (snowflake)
tourmalinated quartz
aventurine (green)
lodestone

Group 2

hematite
magnetite
azurite
prehnite
pyrite
barite
rhodochrosite
rubellite
aventurine (blue)
amethyst

Group 3

seraphinite
labradorite
moldavite
selenite
rhodonite
quartz (clear)
calcite
agate (moss)
unakite
apophyllite

Group 4

tektite
quartz (rose)
apophyllite
citrine
azurite
rhodochrosite
moldavite
pyrite
vesuvianite
hematite

Group 5

jasper (red)
quartz (rutilated)
moonstone
sunstone
jet
rubellite
barite
agate (blue lace)
garnet
quartz (clear)

Group 6

serpentine
galena
peridot
howlite
labradorite
selenite
calcite
apache tear
malachite
ammonite

Group 7

pyrite
malachite
quartz (rose)
turquoise
fluorite
barite
topaz (imperial)
angelite
citrine
calcite

Group 8

sodalite
jasper (red)
garnet
galena
hematite
moldavite
chrysocolla
unakite
selenite
lepidolite