Gneiss with garnet, light micrograph
Gneiss with garnet
Garnet mica schist thin cut, polarised light micrograph
Orthogneiss, light micrograph
Snowball garnet, light micrograph
Amphibolite, light micrograph
Almandine
Rare bright green Uvarovite Garnet
Kimberlite rock, light micrograph
Garnet
Migmatite, light micrograph
Paragneiss, light micrograph
Kelephytic corona, light micrograph
Lherzolite rock, light micrograph
Eclogite rock, light micrograph
Raw garnet crystal
Garnets in micaschist, light micrograph
Cut Pyrope gemstone
Tourmaline crystal, thin section
Migmatite
Lapis lazuli, SEM
Black tourmaline, SEM
Garnet crystals on schist
Garnet in peridotite
Basalt, light micrograph
Garnet.
Gneiss, light micrograph
Garnet gemstones
Garnet gemstone
Spessartine garnet
Garnet-bearing rock
Uvarovite garnet crystals
Cut Spessartine gemstone
Grossular garnet crystals on rock surface
Precious gemstones
Wollastonite with kolophonite
Almandine crystals in schist
Peridotite
Emerald
Garnet gem
Garnet in Schist
Peridotite, polarised light micrograph
Colourful gemstones
Andradite crystals
Almandine mineral sample
Pyrope sand
Clinochlore with garnets
Grossular crystals in host rock
Metamorphic rock
Grossular dodecahedral crystal
Andradite mineral
Demantoid
Pyroxenite rock, light micrograph
Dunite rock, light micrograph
Olivine flakes, light micrograph
Tourmaline mineral, light micrograph
Peridotite rock, light micrograph
Oolitic limestone, light micrograph
Citrine
Jasper, polarised light micrograph
Cut Watermelon Tourmaline gemstone
Yellow-green Tourmaline rough
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Mylonite, light micrograph
Tourmaline unworked stones
Garnet in micaschist I
Concentric banding in agate
Prehnite and okenite
Princess cut garnet
Round cut garnet
Grossularite Garnet crystals, Hessonite
Garnet, Concord, Vermont, USA
Garnet, variety Androdite
Grossularite Garnet crystal
Deformation of garnet crystal
Garnet, variety Uvarovite on diopside
Demantoid garnet gemstone
Spessartite (garnet) crystals growing on albite
Grossular
Zircon crystals on host rock
Polarised LM of thin section of gabbro
Gabbro rock, light micrograph
Komatitite rock, light micrograph
Biotite mineral in orthopyroxene
Twinned augite crystals
Yellow crystal
Fire Opal
Tourmaline cross section
Cut green Tourmaline gemstone
Cut pink Topaz gemstone
Almandine crystals
Almandine garnet in mica schist
Uncut emeralds
Uvarovite Garnet
Cut pink topaz gemstone
Lizardite in serpentine rock
Gneiss, thin section, polarised LM
Amethyst, SEM
Microdiamond crystal
Limestone, light micrograph
Quartz nodule, polarised light micrograph
Tourmaline on quartz
Pallasite meteorite fragment
Agate, polarised light micrograph
Ruby in zoisite
Quartzite mineral, light micrograph
Mica schist folds, light micrograph
Granodiorite rock, light micrograph
Melaphyr rock, light micrograph
Pink beryl crystal, SEM
Diamond with garnet inclusion
Sample of muscovite
Axinite
Tourmaline
Cut Cordierite (Iolite) gemstone
Cut Kyanite gemstone
Cut Scapolite gemstone
Rough pinkish-red Rubellite
Moss agate, polarised light micrograph
Quartz crystals, SEM
Quartz crystal, SEM
Emerald cut ruby
Spessartite crystals, Monroe, Connecticut
Grossular, Mexico
Andradite, New Jersey
Melanite
Hessonite
Boudinage in dyke crossing serpentinite
Mica in quartz, light micrograph
Garnet in micaschist II
Marble, polarised light micrograph
Gemstones and light dispersion
Selenite mineral, light micrograph
Lasa marble, light micrograph
Tiger eye, thin section micrograph
Sample of feldspar
Uvarovite crystals
Agate
Chalcedony