Almandine close
Almandine
Mesolite
Zinnwaldite mineral group
Feldspar and quartz
Ruby in zoisite
Scolecite
Kyanite
Microcline mineral
Azurite on Chrysocolla substrate
Chrysocolla mineral
Stilbite crystal group
Prehnite and okenite
Tourmaline on quartz
Axinite
Malachite and chrysocolla minerals
Steatite (soapstone)
Beryl crystals
Smoky quartz
Chabazite
Apophyllite crystals
Native gold on quartz
Zircon crystals on host rock
Tourmaline
Hornblende crystals
Pyroxene crystal, thin section
Rose Quartz
Citrine
Tourmaline unworked stones
Quartz crystals, SEM
Tourmaline crystal, thin section
Quartz crystal, SEM
Pink beryl crystal, SEM
Container of the food additive E554
Container of the food additive E555
Container of the food additive E556
Container of the food additive E559
Tourmaline cross section
Raw garnet crystal
Twinned augite crystals
Concentric banding in agate
Rough pinkish-red Rubellite
Rare bright green Uvarovite Garnet
Quartz coated with silica
Wavellite
Pallasite meteorite fragment
Neptunite
Sample of muscovite
Sodium thiosulphate crystals
Sodium bicarbonate crystals, light micrograph
Apophyllite
Sodalite
化学物質の結晶
Lapis lazuli crystals I
Lapis lazuli crystals II
Almandine crystals
Amethyst crystals
Barite on Cerusite, close
Apophyllite on calcite
Blue labradorite
Copper sulphate and alum crystals
Dendrites in agate
Agate
Chalcedony
Lizardite in serpentine rock
Smoky quartz crystals
Cobalt chloride crystals
Enstatite
Container of the food additive E550
Container of the food additive E560
Container of the food additive E557
Alum crystals
Potassium nitrate crystals
Barite on Cerusite II
Vauquelinite
Magnesium sulphate crystals
Cobalt II nitrate 6 water on watch glass
A piece of Thenardite
Aluminium potassium and copper sulphates, light micrograph
Metal sulphate and hydroquinone, light micrograph
Sodium phosphate crystals, SEM
Potassium hexacyanoferrate, polarised light micrograph
Chemical mixture, polarised light micrograph
Staurolite, twinning cross
Chalcocite crystals
Magnetite and calcite
Ammonium iron sulfates, polarised light micrograph
Manganese sulphate heptahydrate, polarised light micrograph
Crocoite
Sample of feldspar
Citrine crystal group
Cut Scapolite round gemstone
Diaspore
Cerrusite
Barite on Cerusite I
Witherite crystals, SEM
Kernite crystal
Ferrous sulphate crystals
Ankerite crystals in groundmass, close-up
Linarite in rock groundmass, close-up
Asbestos sample
Fayalite
Rhodonite