mineral variety
mineral variety of a IMA-CNMNC valid mineral species
sapphire
gem variety of corundum
red beryl
beryl var.
bort
variation of diamond (powder end particles), applied in abrasives, polishing agents, lubricants and on drilling & cutting tools/machinery
sardonyx
chalcedony variety
prase
quartz variety
steatite
mineral, talc variety
emerald
green gemstone, a beryl variety
selenite
mineral variety
bytownite
mineral: intermediate member of a solid solution series (70 to 90 % anorthite and albite)
morganite
beryl variety
melanite
mineral
rock crystal
colourless and transparent form of quartz
crocidolite
fibrous variety of riebeckite root name mineral group
adamantine spar
variety of corundum
chalcedony
microcrystalline varieties of silica, may contain moganite as well
electrum
natural alloy of gold and silver
rubellite
red gemstone quality Li-rich and more or less (Fe+Mg)-free tourmaline variety
heliodor
gem-quality greenish-yellow variety of beryl
bakerite
nesosilicate mineral, datolite variety
pitchblende
uraninite variety
chlorastrolite
bluish-green sorosilicate, national gemstone of Michigan
chrome chalcedony
Chromium containing variant of chalcedony
pericline
albite variety
rose quartz
mineral, quartz variety
oligoclase
mineral: intermediate member of a solid solution series (10 to 30 % anorthite and albite)
Iceland spar
transparent variety of calcite
Iris quartz
variety of quartz
topazolite
andradite variety
alabaster
gypsum variety
argentite
sulfide mineral
moonstone
orthoclase variety moonstone also known as white labradorite from feldspar with schiller
demantoid
green andradite variety
alvite
metamict, often Hf-rich zircon variety
andesine
mineral: intermediate member of a solid solution series (30 to 50 % anorthite and albite)
amazonite
microcline variety, mineral
falcon's eye
mineral
iridosmine
mineral
chiastolite
andalusite variety
sanguine
hematite variety
amosite
fibrous grunerite variety
aquamarine
variety of beryl gemstone
amethyst
mineral of quartz variety
carnelian
yellow-red chalcedony variety, used as a semi-precious gemstone
fire agate
During volcanism hot water soaked with silica iron oxide fills cracks and bubbles in rock
anorthoclase
mineral: intermediate member of a solid solution series (albite and sanidine)
ruby
variety of corundum, mineral, gemstone
onyx
banded variety of the mineral chalcedony
hyalophane
mineral; intermediate member of a solid solution series of celsian and orthoclase minerals
kamacite
mineral, Ni-bearing iron variety
labradorite
mineral: intermediate member of a solid solution series (50 to 70 % anorthite and albite)