Opal
Round polished Common Opal
Opal gemstones
Opal rock
Single piece of blue opal
Opal mineral stone
Black opal gemstone
Opal birthstone
Blue opal gemstones
Opal gem necklace
Opal gem and rock
Opal in its host rock
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Fire opal
Opal on bedrock
Boulder opal formation
Opal specimen
Opal specimen and cut stone
オパール
Opal specimens
Fire opal birthstone
'Black' opal cabochon specimen
Cut Fire Opal gemstone
Opal gemstone
Mineral samples
A cut and polished fire opal
Slice through fossilised wood revealing opal
Opal surface
Opalised fossil
Fire Opal
Three pieces of blue opal
Moonstone
Tourmaline
Elbaite mineral (tourmaline)
Tourmaline crystals in quartz
Tourmaline gemstone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Tourmaline specimen
Watermelon tourmaline
Elbaite mineral
Dravite mineral
Schorl and quartz crystals in groundmass
Verdite green tourmaline gemstone
Raw tourmaline crystal
蛋白石
Turquoise gemstone
Black tourmaline in mica schist
Yellow-green Tourmaline rough
Amethyst gemstone
Diamond
Mystic topaz gemstone
Tourmaline gemstones and crystal
Tool holding diamond
Bi-coloured tourmaline crystals
Labradorite sunstone
Oval polished green Chrysoprase
Oval Sunstone gemstone
Blue tourmaline crystals
Granite specimen
Rubellite tourmaline pendant
Tourmaline crystal specimen
Tourmaline crystal specimens
Elbaite on albite and quartz
Tourmaline embedded in feldspar rock
Limburgite
Citrine gemstone
Diamonds
Moonstones
Opal Bivalve fossil Coober Pedy Australia
Asscher cut diamond gemstone
Pink diamonds
Oval cut Sphene gemstone
Tourmaline crystals in quartzite
Mylonite, light micrograph
Cut Watermelon Tourmaline gemstone
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Tourmaline pegmatite
Tourmaline gemstones in quartz
Tourmaline Pegmatite
Tourmaline gem, 365 carat
Tourmaline gem
Tourmaline crystals in matrix
Elbaite crystal, variety Tourmaline
Schorl variety of Tourmaline, Namibia
Tourmaline crystals
Albite with Tourmaline
Tourmaline crystals on Albite
Sherry Topaz
Uncut diamonds
Detail of brushed copper
Peridot
Carbon
Garnet gemstone
Grossular dodecahedral crystal
Amethyst gemstones
Tool holding amethyst gemstone
Emeralds
Raw aquamarine crystal
Rough opal
Tourmaline gemstones
Tourmaline mica in slate
Tourmaline crystal
Tourmaline in gneiss rock
Pink tourmaline crystals growing on mica
Quartz and green tourmaline crystals
Crystals of green toumaline and pink lepidolite
Tourmaline in quartz
Tourmaline quartz
Amethyst crystals
Graphic tourmaline, light micrograph
Garnet
Schorl, the black variety of Tourmaline
Tourmaline Crystals, Minas Gerais, Brazil
Green Tourmaline in Muscovite, Maine
Pallasite meteorite
Citrine
Nephrite crystals
Moonstone gemstones
Garnet-bearing rock
Jade stone
Amethyst filled geode
Garnet crystals on schist
Topaz specimens
Pyrargyrite crystals
Amethyst geode interior
Spessartine garnet
Illustrations of Indian diamonds
Topaz
Cursed amethyst
Andradite mineral
Demantoid
Topaz crystal in albite and microcline
Emerald crystal, close up
Imperial Jade streaked with green
Prismatic amethyst crystal
Olivine peridot crystal, close up
Cut Emerald gemstone
Amazonite mineral
Grossular garnet crystals on rock surface
Turquoise on rock surface, close-up
Turquoise stone set in gold ring
Five polished ruby gemstones
Lapis lazuli specimen
Colourful gemstones