Rare bright green Uvarovite Garnet
Almandine
Raw garnet crystal
Gneiss with garnet
Gneiss with garnet, light micrograph
Garnet
Uvarovite garnet crystals
Cut Pyrope gemstone
Garnet crystals on schist
Garnet in peridotite
Garnet gemstone
Spessartine garnet
Grossular garnet crystals on rock surface
Almandine crystals in schist
Wollastonite with kolophonite
Peridotite
Almandine garnet in mica schist
Andradite crystals
Almandine mineral sample
Garnets in micaschist, light micrograph
Pyrope sand
Clinochlore with garnets
Grossular crystals in host rock
Grossular dodecahedral crystal
Andradite mineral
Demantoid
Uvarovite crystals
Citrine
Deformation of garnet crystal
Rough pinkish-red Rubellite
Concentric banding in agate
Tourmaline
Tourmaline on quartz
Tourmaline cross section
Green hemimorphite in groundmass
Garnet.
Zircon crystals on host rock
Garnet mica schist thin cut, polarised light micrograph
Tourmaline crystal, thin section
Garnet gemstones
Cut Spessartine gemstone
Grossular
Tourmaline unworked stones
Garnet, variety Uvarovite on diopside
Prehnite and okenite
Heat-treated amethyst
Elbaite on albite and quartz
Schorl and quartz crystals in groundmass
Uvarovite Garnet
Cut Watermelon Tourmaline gemstone
Yellow-green Tourmaline rough
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Emerald
Pallasite meteorite fragment
Sapphire crystals in rock groundmass
Rose Quartz
Precious gemstones
Snowball garnet, light micrograph
Garnet-bearing rock
Diamond with garnet inclusion
Almandine crystals
Andradite, New Jersey
Axinite
Amphibolite, light micrograph
Garnet Crystal Gemstone
Lapis lazuli, SEM
Colourful gemstones
Ruby in zoisite
Demantoid garnet gemstone
Magnesite crystals in groundmass
Chrysocolla mineral
Beryl crystals
Quartz coated with silica
Garnet gem
Turquoise embedded in iron oxide
Garnet in Schist
Wedge shaped titanite crystal
Sphene crystals in groundmass, close-up
Metamorphic rock
Kimberlite rock, light micrograph
Cut green Tourmaline gemstone
Garnet in micaschist I
Hessonite
Scapolite crystals in rock groundmass
Cut Scapolite round gemstone
Agate
Chalcedony
Celestine crystals in sulphur groundmass
Pink beryl crystal, SEM
Lapis lazuli crystals I
Lapis lazuli crystals II
Rough Diaspore
Uncut emeralds
Barytocalcite crystals in rock groundmass
Ankerite crystals in groundmass, close-up
Artinite crystals in rock groundmass
Chalcanthite crystals in rock groundmass
Blue smithsonite in groundmass
Rhombohedral siderite crystals
Linarite in rock groundmass, close-up
Feldspar and quartz
Princess cut garnet
Round cut garnet
Grossularite Garnet crystals, Hessonite
Garnet, Concord, Vermont, USA
Garnet, variety Androdite
Grossularite Garnet crystal
Cut Kyanite gemstone
Emerald crystal, close up
Olivine peridot crystal, close up
Smoky quartz
Twinned augite crystals
Emeralds
Cut pink Topaz gemstone
Crust of uvarovite on rock groundmass
Spessartite (garnet) crystals growing on albite
Blue benitoite and white natrolite
Ruby
Franklinitein calcite groundmass
Spine crystals in quartz groundmass
Malachite and chrysocolla minerals
Cut Diopside gemstone
Kelephytic corona, light micrograph
Lherzolite rock, light micrograph
Eclogite rock, light micrograph
Ironstone matrix with potch opal
Synthetic gemstones
Ruby crystal and gems
Sapphire crystal
Calcite crystal
Calcite
Quartz encrusted calcite crystals
Stilbite crystal group
Orthogneiss, light micrograph
Green apophyllite in stilbite groundmass
Green spherical prehnite crystals
Dioptase crystals in groundmass
Amethyst crystals
Microcline mineral
Yellow crystal
Fire Opal
Black tourmaline, SEM
Topaz crystal in albite and microcline
Black tourmaline in mica schist
Opalised fossil
Tourmaline crystals in quartzite
Quartz crystals, SEM
Quartz crystal, SEM
Cut Cordierite (Iolite) gemstone
Cut Scapolite gemstone
Kyanite
Tourmaline embedded in feldspar rock
Elbaite mineral (tourmaline)
Pyrargyrite crystals
Lizardite in serpentine rock
Childrenite crystal in quartz
Prismatic parallel crystals of allanite
Willemite crystal