Almandine
Almandine crystals in schist
Almandine crystals
Rare bright green Uvarovite Garnet
Almandine mineral sample
Almandine garnet in mica schist
Raw garnet crystal
Garnet mica schist thin cut, polarised light micrograph
Gneiss with garnet, light micrograph
Gneiss with garnet
Axinite
Garnet crystals on schist
Cut Pyrope gemstone
Garnet
Prehnite and okenite
Ruby in zoisite
Cut Spessartine gemstone
Feldspar and quartz
Wollastonite with kolophonite
Peridotite
Garnet in peridotite
Grossular
Pallasite meteorite fragment
Garnet in micaschist I
Concentric banding in agate
Tourmaline
Tourmaline on quartz
Rough pinkish-red Rubellite
Colourful gemstones
Chrysocolla mineral
Zircon crystals on host rock
Stilbite crystal group
Uvarovite crystals
Kyanite
Andradite crystals
Garnets in micaschist, light micrograph
Pyrope sand
Garnet gemstone
Clinochlore with garnets
Uvarovite garnet crystals
Grossular crystals in host rock
Spessartine garnet
Grossular dodecahedral crystal
Andradite mineral
Demantoid
Grossular garnet crystals on rock surface
Scolecite
Beryl crystals
Quartz coated with silica
Sample of muscovite
Rose Quartz
Citrine
Zinnwaldite mineral group
Almandine close
Hessonite
Tourmaline unworked stones
Tourmaline cross section
Agate
Chalcedony
Pink beryl crystal, SEM
Garnet in micaschist II
Precious gemstones
Blue labradorite
Tourmaline crystal, thin section
Black tourmaline in mica schist
Native gold
Tourmaline crystals in quartzite
Deformed quartz veins in slate
Andradite, New Jersey
Deformation of garnet crystal
Microcline mineral
Quartz crystals, SEM
Quartz crystal, SEM
Lizardite in serpentine rock
Garnet in Schist
Amphibolite, light micrograph
Apophyllite crystals
Malachite and chrysocolla minerals
Lapis lazuli, SEM
Emerald
Cut Kyanite gemstone
Cut Watermelon Tourmaline gemstone
Yellow-green Tourmaline rough
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Twinned augite crystals
Smoky quartz
Cut Scapolite round gemstone
Apophyllite on calcite
Pyroxene crystal, thin section
Andelusite crystals in slate
Migmatite, light micrograph
Orthogneiss, light micrograph
Sample of feldspar
Calcite crystal
Calcite
Quartz encrusted calcite crystals
Amethyst crystals
Rough topaz
Kimberlite rock, light micrograph
Garnet-bearing rock
Metamorphic rock
Snowball garnet, light micrograph
Cut Cordierite (Iolite) gemstone
Cut Scapolite gemstone
Cut Indicolite gemstone
Diamond with garnet inclusion
Magnetite and calcite
Synthetic gemstones
Ruby
Ruby crystal and gems
Sapphire crystal
Ruby crystals, SEM
Brazilianite crystals in calcite
Cut and polished septarian nodule
Calcite crystal rosettes
Magnesite crystals in groundmass
Garnet.
Garnet gemstones
Mica schist folds, light micrograph
Staurolite in mica schist groundmass
Wavellite
Moss agate
Ruby quartz
Hornblende crystals
Sphalerite
Cut Diopside gemstone
Cut yellow Vesuvianite gemstone
Round cut red Andesine
Cut Quartz gemstone
Cut Zircon gemstone
Scapolite crystals in rock groundmass
Citrine crystal group
Lapis lazuli crystals I
Lapis lazuli crystals II
Asbestos veins in serpentinite
Rutilated quartz
Migmatite
Paragneiss, light micrograph
Sapphire crystals in rock groundmass
Labradorite
Marble, polarised light microraph
Hedenbergite
Chabazite