Agate (Chalcedony)
red-banded agate that is also known as sard or sardonyx
Alexandrite (Chrysoberyl)
faceted alexandrite displaying the color change effect
Almandine or Carbuncle
alamandine garnet in gneiss
Amethyst (Quartz)
amethyst crystals
rough specimen
amethyst geode
Ametrine (Quartz)
faceted ametrine
Apatite (Apatite)
apatite crystals
Aquamarine (Beryl)
faceted aquamarine
Arsenic
native arsenic specimen
Aventurine (Chalcedony)
polished aventurine nugget
Azurite
azurite crystals
azurite geode
Benitoite (Benitoite)
benitoite crystals in their matrix
Beryl (Beryl)
electron micrograph of hexagonal beryl crystal
rough beryls from the Emerald Hollow Mine, NC
beryl crystals in matrix
Bloodstone (Chalcedony)
polished bloodstone nugget
Carnelian (Chalcedony)
carnelian specimen
Chalcedony
carnelian example of the mineral chalcedony
rough jasper example of chalcedony
Chrysoberyl (Chrysoberyl)
faceted chrysoberyl, displaying fluorescence
cymophane or catseye chrysoberyl
Chrysocolla
polished chrysocolla nugget
Citrine (Quartz)
faceted citrine
Copper
piece of native copper
crystals of native copper on a rock
another example of native copper
Corundum (see also Ruby and Sapphire)
rough corundum (sapphire) from North Carolina
Diamond (Diamond)
rough octohedral diamond crystal
faceted diamond
Emerald (Beryl)
858-carat Galacha Emerald
rough emerald crystals
single rough emerald crystal
Fluorite
blue fluorite or fluorspar crystals
reddish fluorite crystals on matrix
Garnet (Almandine, Andratite, Grossularite, Pyrope, Spessartine, Uvarovite)
alamandine garnet crystal in gneiss
spessartine garnet
faceted garnet
garnet crystals with quartz
small garnet, showing a typical wine color associated with the gemstone
Gold
native gold nugget
Halite (Rock Salt)
halite crystal
single halite crystal
example of halite or rock salt crystals
Heliodor (Beryl)
heliodor crystal
Heliotrope (Chalcedony)
polished heliotrope
Hematite
rough hematite specimen
Hiddenite (Spodumene)
hiddenite from Hiddenite, NC
Iolite (Cordierite)
faceted iolite
Jade (Jadeite or Nephrite)
Jasper (Chalcedony)
rough jasper
polished orbicular jasper
Kyanite
kyanite crystals
Labradorite (Spectrolite)
rough labradorite specimen
Malachite (Malachite)
polished malachite nugget
Mica
flakes of mica from Hiddenite, NC
Monazite
small specimen of monazite from NC
Moonstone (Albite, Microcline Feldspar, Orthoclase, Plagioclase)
Morganite (Beryl)
uncut morganite crystal
Olivine (Chrysolite)
olivine in lava
green sand composed of olivine
gemstone-quality olivine, or peridot
Opal (Opal)
rough opal from Nevada
massive opal from Australia
iron-bearing rock containing veils of opal
Peridot (Olivine)
rough peridot
Platinum
native platinum, likely associated with other platinum metals
Pyrite
pyrite crystals in matrix
another example of pyrite crystals
Quartz (Quartz)
clear quartz crystals (rock crystal)
smoky quartz crystals
Rock Crystal (Quartz)
quartz crystals
Rose Quartz (Quartz)
rough rose quartz
Ruby (Corundum)
faceted ruby
rough ruby
unfaceted ruby from North Carolina
another unfaceted ruby from North Carolina
Rutile
rutile needles in quartz
quartz crystal with rutile needle inclusions
Sapphire (Corundum)
faceted sapphire with diamonds
star sapphire
Star of India blue star sapphire
Sard (Chalcedony)
red-banded agate that is also known as sard or sardonyx
Sardonyx
red-banded agate that is also known as sard or sardonyx
Silver
silver crystals
Sodalite (Sodalite)
rough sodalite specimen
Spessartine or Spessartite
spessartine garnet crystals
Spinel (Spinel)
spinel crystals
Sugilite (Sugilite)
polished sugilite nugget
polished sugilite tile
Sulfur
sulfur crystals
native sulfur crystals
Sunstone (Oligoclase Feldspar)
polished sunstone nugget
Tanzanite (Zoisite)
faceted tanzanite
Topaz (Topaz)
topaz crystals
colorless topaz crystal
red topaz crystal
Tourmaline (Tourmaline)
tri-color tourmaline crystals with quartz
Emerald Cut Green Tourmaline
Turquoise (Turquoise)
polished turquoise nugget
