Nephrite crystals
Nephrite jade specimen
Jade sword handle
Titanite crystals in actinolite
Jadeite carved dish from China
Tremolite crystals
Actinolite crystals with talc
Actinolite crystals
Actinolite, Chester, Vermont, USA
Jade stone
Ilmenite crystal with actinolite and quartz
Rough emeralds
Azurite crystals
Pyrargyrite crystals
Actinolite
Actinolite, Tyringham, Massachusetts, USA
Actinolite mineral, light micrograph
Tourmaline crystals in quartzite
Lapis lazuli crystals
Emeralds
Emerald crystal, close up
Grossular crystals in host rock
Azurite crystals, SEM
Asbestos sample
Malachite mineral stone
Microdiamond crystal
Wollastonite with kolophonite
Opalised fossil
Crushed diamond, SEM
Andradite crystals
Topaz crystals
Amethyst crystals
Tourmaline crystals in quartz
Garnet crystals on schist
Uvarovite garnet crystals
Almandine crystals in schist
Imperial Jade streaked with green
Grossular garnet crystals on rock surface
Schorl and quartz crystals in groundmass
Cut diamond
Jade gemstones
Maori Greenstone Jade
Metamorphic rock
Colourful crystals
Galenite and quartz crystals
Chabazite crystals in quartz
Quartz encrusted calcite crystals
Orthoclase and quartz crystals
Crystals of haematite in quartz
Lazurite crystals in a matrix of calcite
Assortment of Gemstones
Uncut diamond
Black tourmaline in mica schist
Citrine
Tourmaline
Amethyst
Ruby
Almandine mineral sample
Olivine mineral sample
Garnets in micaschist, light micrograph
Pyrope sand
Blue sapphire stone
Blue Sapphire uncut stone
Opal gem necklace
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Amethyst geode
Amethyst geodes
Garnet gemstone
Amethyst filled geode
Clinochlore with garnets
Ruby crystal and gems
Rubellite tourmaline pendant
Fire opal
'Black' opal cabochon specimen
Orange sapphire gemstone
Sapphire crystal
Topaz gemstone
Topaz specimens
Amethyst geode interior
Tourmaline crystal specimen
Tourmaline crystal specimens
Spessartine garnet
Watermelon tourmaline
Grossular dodecahedral crystal
Elbaite mineral
Dravite mineral
Andradite mineral
Demantoid
Uncut diamonds
Peridotite
Garnet in peridotite
Amethyst and chalcedony
Topaz crystal in albite and microcline
Ironstone matrix with potch opal
Prismatic amethyst crystal
Olivine peridot crystal, close up
Heat-treated amethyst
Elbaite on albite and quartz
Mineral samples
Tourmaline embedded in feldspar rock
Elbaite mineral (tourmaline)
Opal
Aquamarine prismatic crystals
Fluorite crystals
Amphibolite, light micrograph
Ruby crystals, SEM
Synthetic gemstones
Tourmaline gemstone
First laser
Sapphire crystals in rock groundmass
Diamond in host rock
Azurite in Limonite Groundmass
Native gold
Pseudomorphic crystal growth
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Cabuchon gemstones of jasper
Egyptian jasper stone
Tellurium in quartz
Hessite in quartz
Emerald crystal in quartz
Native gold on quartz
Emerald in quartz
Silica rock crystal samples
Fire agate
Quartz crystals
Aragonite crystals
Rough emerald
Quartz types
Graphic tourmaline, light micrograph
Smoky quartz crystals
Chalcopyrite and quartz crystals
Labradorite rock crystals
Citrine crystals
Aquamarine crystals