Rough opal
Opal jewellery
Potch opal with smooth and rough surface
Opal, Australia
Opal
Opal, Queensland, Australia
Quartz monzonite
Herkimer diamonds
Opal gem and rock
Opal gem necklace
Opal in its host rock
Ironstone matrix with potch opal
Fire opal
Tiger eye
Round polished Common Opal
Jasper
Quartz boulder
Brecciated quartz
Jasper breccia rock
Asscher cut diamond gemstone
Pink diamonds
Chrysoprase
Opal on bedrock
Lapis lazuli specimen
Honey opal
Rough diamond
Boulder opal formation
Rough emeralds
Opal specimen and cut stone
Amethyst
Types of diamonds, 19th century
Gemstones, composite image
Opal gemstone
Dravite mineral
Andradite mineral
Benitoite
Hawk's Eye
Polished Opal
Mahogany obsidian
Elbaite mineral
Quartz crystals
Amethyst geode
Quartz
Siderite mineral
Cubic zirconia
Nephrite crystals
Moonstone gemstones
Titanite bearing granite
Pseudomorphic crystal growth
Molybdenite in quartz monzonite
Laguna agate
Moctezuma agate
Cryptocrystalline agate
Thunder egg agate
Vein agate
Colourful crystals
Garnet-bearing rock
Beryl gem, cut stone
Amethyst filled geode
Aventurine
Tellurium in quartz
Fortification agate
Topaz specimens
Tourmaline
Spessartine garnet
Illustrations of Indian diamonds
Watermelon tourmaline
Topaz
Cursed amethyst
Demantoid
Tourmaline crystals in quartz
Uncut diamonds
Pallasite meteorite
Topaz crystal in albite and microcline
Emerald crystal, close up
Labradorite sunstone
Copal
Oval Sunstone gemstone
Amazonite mineral
Schorl and quartz crystals in groundmass
Turquoise on rock surface, close-up
Sphene crystals in groundmass, close-up
Quartz polished stone
Jade stone
Tourmaline gemstone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Schorl tourmaline crystal stone
Egyptian jasper stone
Round agate geode
Round agate thunderegg
Two agate thundereggs
Agate slice
Blue lace agate
Botswana agate stone
Quartz filled concretion
Garnet crystals on schist
Pyrargyrite crystals
Obsidian
Obsidian flow
Polished Opal gemstone
Crackle quartz
Hessite in quartz
Chabazite crystals in quartz
Glacial sand deposit
Fluorite
Tiger's Eye
Three lumps of gold, close up
Clinochlore with garnets
Opal gemstones
Aquamarine gemstones
Raw aquamarine crystal
Diamonds
Diamond
Tool holding diamond
Colourful gemstones
Moonstones
Tanzanite
Azurite crystals
Carnelian agate
Peridot
Titanite crystals in actinolite
Quartz in sphalerite
Mounted India dendritic agate
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Carbon
Agate
Quartz encrusted calcite crystals
Amethyst geode interior
Garnet
Garnet gemstone
Tourmaline specimen
Grossular dodecahedral crystal
Pink rectangular gemstone
Imperial Jade streaked with green
Prismatic amethyst crystal
Olivine peridot crystal, close up
Sherry Topaz
Cut Diaspore gemstone
Cut Diopside gemstone
Cut Emerald gemstone
Ammolite gemstone
Oval polished green Chrysoprase
Grossular garnet crystals on rock surface
Mimetite in prismatic crystal form
Turquoise stone set in gold ring
Pieces of red spinel
Cuprite crystals, close-up
Elbaite mineral (tourmaline)
Blue benitoite and white natrolite
Five polished ruby gemstones
Citrine
Cut and polished jasper