Ruby
Sapphire crystal
Synthetic gemstones
Rubies and sapphire
Ruby crystal and gems
Blue sapphire stone
Blue Sapphire uncut stone
Ruby quartz
Ruby and sapphire specimens
Ruby crystals, SEM
Sapphire crystals in rock groundmass
Sapphires
Sapphire gemstones
Ruby in zoisite
Precious gemstones
Sapphire gemstone
Orange sapphire gemstone
Sapphire, SEM
Synthetic ruby
Large ruby slice
Sapphire ring
Pyrargyrite crystals
Sample of sapphire
Sapphire Crystal Gemstone
Ruby gemstones
Yellow sapphire
Blue rectangular gemstone
Almandine crystals
Rubies
Cut sapphire
Star rubies and sapphires
Amethyst
Citrine
Opal gem necklace
Jade stone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Amethyst geode
Amethyst geodes
Garnet crystals on schist
Cut Sapphire gemstone
Cut yellow sapphire gemstone
Ironstone matrix with potch opal
Sapphire, Sri Lanka, 288 carat
Tourmaline gemstone
Rutilated quartz
Dendritic mineralisations in chalcedony
Quartz
Quartz polished stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Egyptian jasper stone
Botswana agate stones
Round agate geode
Round agate thunderegg
Two agate thundereggs
Turritella agate
Agate slice
Blue lace agate
Botswana agate stone
Carnelian gemstone
Fuchsite mineral stone
Garnet crystal and rock
Yellow Jasper
Leopardskin jasper stone
Quartz filled concretion
Oval cut purple sapphire gemstone
Assorted jewels
Ruby in Fuchsite a Crystal Gemstone
Pyrolusite in quartz
Gemstones and light dispersion
Sapphire mining, Madagascar
Emerald cut ruby gemstone
Almandine
Spotted Jasper stone
First laser
Twinned staurolite crystals
Aragonite crystals
Gypsum stone
Mass of pyramid-shaped amethyst crystals
Single amethyst crystal, close up
Cuprite crystals, close-up
Sapphires panned from river gravels
Five polished ruby gemstones
Ruby in Fuchsite Crystal Stone
Ruby in Zoisite Crystal Gemstone
Molybdenum disuphide research
Sapphire gravel recovered from a stream
Opal
Peridot
Various colored and heart shaped crystals
Turquoise embedded in iron oxide
Corundum crystal
Iron pyrite crystals
Marcasite.
Azurite crystals
Unakite mineral stone
Zeolite crystal
Hope Chrysoberyl gemstone
Crystalline limestone rock
Basaltic dyke rock
Silver wire, mine specimen
Jasp agate cabuchon
Moss agate marble pattern
Cross section of hollow agate
Cross section of jasp agate
Cross section of agate
Agate polished cross section
Agate polished stone pattern
Mocha agate with veined pattern
Agate with round centre
Brecciated Agate stone
Agate cross section and layers
Agate stone cross section
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Desert rose mineral clusters
Dolomite mineral
Haematite mineral rock
Haematite group of stones
Haematite tumblestone polished stone
Native copper
Uncut diamond
Microdiamond crystal
Black tourmaline in mica schist
Tourmaline
Cut diamond
Tourmaline crystals in quartz
Andradite crystals
Almandine mineral sample
Olivine mineral sample
Garnets in micaschist, light micrograph
Nephrite crystals