Cut Spessartine gemstone
Cut Pyrope gemstone
Garnet
Gneiss with garnet
Oval cut red Rhodochrosite gemstone
Cut pink topaz gemstone
Cut green Tourmaline gemstone
Cut Cordierite (Iolite) gemstone
Cut Kyanite gemstone
Cut Scapolite gemstone
Trillion cut tourmaline gemstone
Cut pink Topaz gemstone
Cut green Paraiba Tourmaline gemstone
Cut Zircon gemstone
Colourful gemstones
Cut Indicolite gemstone
Cut yellow Vesuvianite gemstone
Cut Quartz gemstone
Round cut red Andesine
Almandine
Rare bright green Uvarovite Garnet
Gneiss with garnet, light micrograph
Cut Watermelon Tourmaline gemstone
Cut Diopside gemstone
Raw garnet crystal
Cut Scapolite round gemstone
Axinite
Uvarovite crystals
Rhodonite
Tourmaline cross section
Cut Red Spinel gemstone
Almandine garnet in mica schist
Moss agate
Grossular garnet crystals on rock surface
Hessonite
Oval cut Apatite gemstone
Almandine crystals
Zircon crystals on host rock
Yellow-green Tourmaline rough
Garnet gemstone
Cut Diaspore gemstone
Cut Ruby gemstone
Gemstones and light dispersion
Ruby in zoisite
Chrysocolla mineral
Tourmaline unworked stones
Tourmaline
Tourmaline on quartz
Rough pinkish-red Rubellite
Cut Aquamarine gemstone
Cut Peridot gemstone
Cut Sapphire gemstone
Oval cut Sphene gemstone
Cut yellow sapphire gemstone
Cut pink-violet Kunzite gemstone
Square cut purple Amethyst gemstone
Precious gemstones
Garnet.
Garnet gemstones
Princess cut garnet
Emerald cut ruby
Round cut garnet
Garnet, variety Androdite
Sample of feldspar
Lizardite in serpentine rock
Cut Sphalerite gemstone
Demantoid
Pyroxmangite
Kimberlite rock, light micrograph
Andradite crystals
Almandine mineral sample
Garnets in micaschist, light micrograph
Pyrope sand
Garnet-bearing rock
Clinochlore with garnets
Garnet crystals on schist
Wollastonite with kolophonite
Grossular crystals in host rock
Almandine crystals in schist
Spessartine garnet
Metamorphic rock
Grossular dodecahedral crystal
Andradite mineral
Peridotite
Garnet in peridotite
Snowball garnet, light micrograph
Agate
Chalcedony
Lapis lazuli, SEM
Concentric banding in agate
Emerald
Prehnite and okenite
Pallasite meteorite fragment
Round cut mauve Spinel gemstone
Sample of muscovite
Beryl crystals
Manganese-iron dendrites
Rose Quartz
Citrine
Demantoid garnet gemstone
Brilliant cut pink diamond gemstone
Paragneiss, light micrograph
Hedyphane
Garnet mica schist thin cut, polarised light micrograph
Uvarovite garnet crystals
Grossular
Amphibolite, light micrograph
Migmatite, light micrograph
Orthogneiss, light micrograph
Fire Opal
Dendritic pyrolusite
Pyrolusite
Emerald cut diamond gemstone
Cushion cut diamond gemstone
Asscher cut diamond gemstone
Heart cut diamond gemstone
Brilliant cut diamond gemstone
Pear cut diamond gemstone
Cut Rose Quartz gemstone
Stilbite crystal group
Quartz coated with silica
Panorama in Espumoso
Oval cut purple sapphire gemstone
Asbestos veins in serpentinite
Feldspar and quartz
Dendrites in agate
Fluorite
Cut Fire Opal gemstone
Zincite
Purple fluorite
Aventurine
Uncut emeralds
Migmatite
Garnet gem
Spessartite crystals, Monroe, Connecticut
Grossular, Mexico
Grossularite Garnet crystals, Hessonite
Garnet, Concord, Vermont, USA
Garnet in Schist
Garnet, variety Uvarovite on diopside
Andradite, New Jersey
Grossularite Garnet crystal
Kelephytic corona, light micrograph
Eclogite rock, light micrograph
Melanite
Deformation of garnet crystal
Spessartite (garnet) crystals growing on albite
Boudinage in dyke crossing serpentinite
Siderite and calcite
Wad manganese mineral
Eroded rock
Tiger eye, polished surface