Asbestos sample
Canari asbestos plant, Corsica
Actinolite crystals
Actinolite crystals with talc
Nephrite crystals
Titanite crystals in actinolite
Tremolite crystals
Asbestos veins in serpentinite
Jadeite carved dish from China
Nephrite jade specimen
Jade sword handle
Actinolite, Chester, Vermont, USA
Stilbite crystal group
Asbestos fibres
Asbestos fibres, SEM
Actinolite
Actinolite, Tyringham, Massachusetts, USA
Actinolite mineral, light micrograph
Ilmenite crystal with actinolite and quartz
Chrysotile in groundmass, close-up
Agate
Chalcedony
Citrine crystal group
Concentric banding in agate
Tourmaline unworked stones
Almandine
Fayalite
Tourmaline on quartz
Axinite
Prehnite and okenite
Chrysocolla mineral
Beryl crystals
Pink beryl crystal, SEM
Quartz coated with silica
Pallasite meteorite fragment
Azurite crystals, SEM
Azurite crystals
Scolecite
Quartz crystals, SEM
Fibrous crystals of riebeckite on rock groundmass
Tremolite, New Jersey, USA.
Crocoite
Brochantite
Anthophyllite asbestos
Amphibole Asbestos, Maryland, USA
Arsenopyrite
Azurite in Limonite Groundmass
Ruby in zoisite
Zircon crystals on host rock
Zinnwaldite mineral group
Rhodonite
Chabazite
Quartz crystal, SEM
Citrine
Kyanite
Azurite on Chrysocolla substrate
Azurite sample
Tremolite variety Hexagonite
Tourmaline cross section
Tourmaline
Cut Scapolite round gemstone
Rough pinkish-red Rubellite
Rare bright green Uvarovite Garnet
actinolite
緑閃石
Sample of feldspar
Sample of muscovite
Emerald
Serpentine groundmass with chrysotile
Chrysotile Asbestos
Labradorite
Blue labradorite
Silver crystals in calcite
Dendritic mineralisations in chalcedony
Chrysotile asbestos fibers
Asbestos fiberschrysotile type, SEM
Raw garnet crystal
Tourmaline crystal, thin section
Malachite and chrysocolla minerals
Amethyst crystals
Apophyllite crystals
Scapolite mineral sample
Scapolite crystals in rock groundmass
Azurite mineral sample
Brochantite and azurite crystals
Azurite
Nagyagite
Datolite crystals
Datolite
Manganite
Staurolite, twinning cross
Lapis lazuli, SEM
Moss agate
Cut pink topaz gemstone
Basalt, light micrograph
Gneiss with garnet, light micrograph
Gneiss with garnet
Tremolite, Tyringham, Massachusetts, USA
Tremolite, Canaan, Connecticut, USA
Feldspar and quartz
Rose Quartz
Lapis lazuli crystals I
Lapis lazuli crystals II
Lizardite in serpentine rock
Calcite crystals
Coral calcite crystals
Brazilianite crystals in calcite
Magnetite and calcite
Aragonite crystals
Aragonite crystals with sulphur
Flos-ferri aragonite
Pseudomorphic crystal growth
Calcite crystal
Calcite
Gypsum stone
Graphite on calcite crystals
Sylvanite crystals
Cut and polished septarian nodule
Apophyllite on calcite
Pink calcite crystals
Zincite in fraklinite
Rutilated quartz
Quartz encrusted calcite crystals
Septarian nodule
Tetrahedrite
Calcium carbonate precipitation
Aragonite
Scalenohedral calcite crystals
Aragonite floral crystals
Red calcite crystals
Calcite crystal rosettes
Sphalerite on strontianite