Tiger eye, polished surface
Tiger eye, thin section micrograph
Tiger eye, light micrograph
Polished tiger's eye stone
Tiger's Eye
Dendrites in agate
Tiger eye ochre gemstones
Brecciated jasper
Fire Opal
Tiger's eye mineral, light micrgraph
Tiger eye gemstone
Cut Quartz gemstone
Opal cabochons
Tiger eye
Carnelian
Tiger Eye.
Cut Scapolite gemstone
Leopard skin jasper close
Leopard skin jasper II
Leopard skin jasper I
Yellow crystal
Smoky quartz
Concentric banding in agate
Citrine
Cut yellow Vesuvianite gemstone
Polished Chrysocolla cabochons
Polished oval Hawk's Eye Quartz
Tiger Eye quartz gemstone
Cabuchon gemstones of jasper
Tiger's eye and Hawk's eye gemstones
Amethyst crystals
Garnet
Cut Cordierite (Iolite) gemstone
Cut Kyanite gemstone
Cut Pyrope gemstone
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Aventurine
Banded iron formation
Native gold on quartz
blue apatite
Deformation in tiger ironstone
Picture Jasper
Cut pink topaz gemstone
Cut green Tourmaline gemstone
Cut pink Topaz gemstone
Raw garnet crystal
Barred olivine chondrule
Gneiss with garnet
Cut Scapolite round gemstone
Uncut emeralds
Round cut red Andesine
Cut Zircon gemstone
Moss agate
Polished carnelian stone
Quartz coated with silica
Oval polished green Chrysoprase
Tourmaline crystal, thin section
Black tourmaline, SEM
Lapis lazuli, SEM
Tourmaline
Emerald
Almandine
Tourmaline on quartz
Prehnite and okenite
Cut Watermelon Tourmaline gemstone
Rough pinkish-red Rubellite
Rare bright green Uvarovite Garnet
Yellow-green Tourmaline rough
Gneiss with garnet, light micrograph
Panorama in Espumoso
Cut Indicolite gemstone
Cut Spessartine gemstone
Twinned augite crystals
Cut Diopside gemstone
Rose Quartz
Rutile quartz
Basalt, light micrograph
Agate
Chalcedony
Polished agates
Steatite (soapstone)
Feldspar and quartz
Red jasper mineral
Oval polished Onyx
Moonstone gemstones
Tourmaline unworked stones
Tourmaline cross section
Quartz polished stone
Polished slice of agate
Agate surface
瑪瑙
A polished sample of agate
Cut and polished piece of bloodstone
Jasp agate polished surface
Ruby in zoisite
Zircon crystals on host rock
Colourful gemstones
Cut Heliodor gemstone
Pearl strings
Tigers Eye Crystal
Polished Esterel rhyolite agate
Quartz crystals, SEM
Quartz crystal, SEM
Agate cabuchon stone
Citrine crystal group
Polished variscite stone
Glass
Discovery of Glass
Zinnwaldite mineral group
Calcite crystal
Calcite
Citrine crystals
Lapis lazuli crystals I
Lapis lazuli crystals II
Polished sphere of ocean jasper
Oval cut amethyst
Round cut amethyst
Pear cut amethyst
Amethyst gemstones
Tool holding amethyst gemstone
Fortification agate
アメジスト
Agate thunderegg
Crystal healing therapy with white selenite crystal wand
Crystal healing therapy with black and white crystal wands
'Black' opal cabochon specimen
Polished turquoise stone
Quartz crystals
Assortment of Red Gemstones
Quartz
Amethyst quartz birthstone
Oval cut Apatite gemstone
Agate slice
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Three calcite crystals
Rutile crystals
Quartz encrusted calcite crystals
Septarian nodule polished stone