Nephrite crystals
Jade sword handle
Nephrite jade specimen
Titanite crystals in actinolite
Jadeite carved dish from China
Tremolite crystals
Actinolite crystals with talc
Actinolite crystals
Jade stone
Actinolite, Chester, Vermont, USA
Rough emeralds
Azurite crystals
Ilmenite crystal with actinolite and quartz
Pyrargyrite crystals
Lapis lazuli crystals
Emeralds
Emerald crystal, close up
Grossular crystals in host rock
Actinolite
Actinolite, Tyringham, Massachusetts, USA
Actinolite mineral, light micrograph
Tourmaline crystals in quartzite
Malachite mineral stone
Opalised fossil
Crushed diamond, SEM
Andradite crystals
Topaz crystals
Amethyst crystals
Imperial Jade streaked with green
Tourmaline crystals in quartz
Garnet crystals on schist
Almandine crystals in schist
Grossular garnet crystals on rock surface
Schorl and quartz crystals in groundmass
Azurite crystals, SEM
Jade gemstones
Asbestos sample
Metamorphic rock
Maori Greenstone Jade
Colourful crystals
Galenite and quartz crystals
Chabazite crystals in quartz
Quartz encrusted calcite crystals
Orthoclase and quartz crystals
Crystals of haematite in quartz
Microdiamond crystal
Wollastonite with kolophonite
Assortment of Gemstones
Uvarovite garnet crystals
Lazurite crystals in a matrix of calcite
Uncut diamond
Black tourmaline in mica schist
Tourmaline
Amethyst
Citrine
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
Garnet gemstone
Amethyst filled geode
Clinochlore with garnets
Ruby crystal and gems
Fire opal
Topaz specimens
Amethyst geode interior
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 mineral (tourmaline)
Tourmaline gemstone
First laser
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
Quartz crystals
Rough emerald
Smoky quartz crystals
Labradorite rock crystals
Cut diamond
Ruby
Amethyst geodes
Rubellite tourmaline pendant
'Black' opal cabochon specimen
Orange sapphire gemstone
Sapphire crystal
Topaz gemstone
Tourmaline crystal specimen
Tourmaline crystal specimens
Elbaite on albite and quartz
Mineral samples
Tourmaline embedded in feldspar rock
Opal
Citrine crystals
Aquamarine crystals
Sphene crystals in groundmass, close-up
Aquamarine prismatic crystals
Fluorite crystals
Amethyst crystals, light micrograph
Amphibolite, light micrograph
Mass of prismatic aquamarine crystals