Tiger eye, thin section micrograph
Tiger eye, polished surface
Tiger eye, light micrograph
Tiger's Eye
Polished tiger's eye stone
Dendrites in agate
Tiger eye ochre gemstones
Cut Quartz gemstone
Brecciated jasper
Cut Scapolite gemstone
Leopard skin jasper close
Leopard skin jasper II
Leopard skin jasper I
Gneiss with garnet, light micrograph
Yellow crystal
Fire Opal
Tourmaline crystal, thin section
Tiger eye gemstone
Tiger's eye mineral, light micrgraph
Basalt, light micrograph
Carnelian
Opal cabochons
Tiger eye
Tiger Eye.
Amethyst crystals
Garnet
Cut Cordierite (Iolite) gemstone
Cut Kyanite gemstone
Cut Pyrope gemstone
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Smoky quartz
Concentric banding in agate
Twinned augite crystals
Citrine
Native gold on quartz
Tiger Eye quartz gemstone
Picture Jasper
Cut pink topaz gemstone
Cut green Tourmaline gemstone
Cut pink Topaz gemstone
Tiger's eye and Hawk's eye gemstones
Black tourmaline, SEM
Lapis lazuli, SEM
Cabuchon gemstones of jasper
Aventurine
Cut Scapolite round gemstone
Geode, thin section micrograph
Cut yellow Vesuvianite gemstone
Round cut red Andesine
Cut Zircon gemstone
Moss agate
Banded iron formation
Quartz coated with silica
blue apatite
Polished Chrysocolla cabochons
Deformation in tiger ironstone
Tourmaline cross section
Raw garnet crystal
Tourmaline
Barred olivine chondrule
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
Panorama in Espumoso
Cut Indicolite gemstone
Cut Spessartine gemstone
Uncut emeralds
Geode in thin section
Quartz crystals, SEM
Quartz crystal, SEM
Agate
Chalcedony
Polished oval Hawk's Eye Quartz
Glass
Hornblende crystals
Steatite (soapstone)
Feldspar and quartz
Tourmaline unworked stones
Agate, polarised light micrograph
Orthogneiss, light micrograph
Rutile quartz
Ruby in zoisite
Zircon crystals on host rock
Cut Diopside gemstone
Rose Quartz
Colourful gemstones
Tigers Eye Crystal
Agate cabuchon stone
Citrine crystal group
Discovery of Glass
Zinnwaldite mineral group
Jasper, polarised light micrograph
Siberian agate, polarised light micrograph
Polished carnelian stone
Red jasper mineral
Lapis lazuli crystals I
Lapis lazuli crystals II
Pyroxene crystal, thin section
Crystal healing therapy with white selenite crystal wand
Crystal healing therapy with black and white crystal wands
Moonstone gemstones
'Black' opal cabochon specimen
瑪瑙
Oval polished green Chrysoprase
Assortment of Red Gemstones
Oval cut Apatite gemstone
Agate stone cross section and patterns
Pallasite meteorite fragment
Migmatite
Oval polished Onyx
Geode interior section
Pink beryl crystal, SEM
Apophyllite crystals
Malachite and chrysocolla minerals
Sample of muscovite
Scolecite
Azurite on Chrysocolla substrate
Stilbite crystal group
Axinite
Chrysocolla mineral
Beryl crystals
Citrine gemstone
Citrine gemstones and crystal
Citrine gemstones
Peridotite, thin section micrograph
Cross section of blue agate, a type of chalcedony
Filler (Sillitin Z 86), SEM
Migmatite, light micrograph
Paragneiss, light micrograph
Banded calcite \Onyx\" II"
Sample of feldspar
Lizardite in serpentine rock
Enstatite
Calcite crystal
Calcite
Diatomaceous earth quarry
Biotite mineral in orthopyroxene
Fractured glass edge and surface, SEM