Copper sulphate crystal
Hydrated copper sulphate crystals
Hydrated copper sulphate crystals, SEM
Chalcanthite crystals in rock groundmass
Gypsum stone
Copper sulphate crystals
Copper (II) sulphate
Water added to anhydrous copper sulphate
Copper sulphate solution
Brochantite
Copper sulphate crystals growing
Copper II sulfate
Copper sulphate dissolving in water
A piece of Thenardite
Copper sulphate and alum crystals
Daisy Gypsum
Aragonite crystals
Native copper
Glauberite, close-up
Linarite in rock groundmass, close-up
Rutilated quartz
Copper sulphate
Zinc reacting with copper sulphate
Preparing copper sulphate solution
Moles of solids compared
Copper sulphate precipitate
Ferrous sulphate crystals
Celestine crystals in sulphur groundmass
Copper sulphate reactions
Copper sulphate solutions
Tetrahedrite
Anhydrous copper (II) sulphate
Epsomite, close-up
Polyhalite, close-up
Ruby
Copper sulphate crystallizing
Copper Sulfate
Sodium sulphate crystallization
Jasp agate cabuchon
Moss agate marble pattern
Cross section of hollow agate
Cross section of jasp agate
Cross section of agate
Agate polished cross section
Agate polished stone pattern
Mocha agate with veined pattern
Agate with round centre
Egyptian jasper stone
Brecciated Agate stone
Agate cross section and layers
Agate stone cross section
Agate stone cross section and patterns
Flame agate stone pattern
Agate stone patterns
Pyrargyrite crystals
Dendritic mineralisations in chalcedony
Calcite crystals
Twinned staurolite crystals
Zeolite crystal
Selenite gypsum
Schorl tourmaline crystal stone
Garnet crystal and rock
Chalcocite crystals
Desert Rose (Selenite) Crystal Gemstone
Iron pyrite crystals
Anhydrous copper sulphate
Copper sulphate, light micrograph
Pseudomorphic crystal growth
Benedict's test for sugar.
Blue sapphire stone
Blue Sapphire uncut stone
Indicolite tourmaline faceted stone
Brochantite and azurite crystals
Amethyst
Round agate geode
Selenite crystals
Copper (II) sulphate crystals
Apophyllite on calcite
Desert rose
Ammonium Sulphate, polarised light micrograph
Barite and chalcopyrite crystals
Nickel displacing copper
Electrolysis of copper sulphate
化学物質の結晶
Gypsum crystals
Transition metal salts
Septarian nodule
Copper II sulphate on watch glass
Copper II sulphate with hazard pictograms
Hydrating copper sulphate
Hydrated copper sulphate
Copper II sulphate water 5 on watch glass
Copper sulphate crystals light micrograph
Copper sulphate reaction
Fibrous antlerite
Microcrystalline antlerite
Plant protein crystals
Marcasite.
Azurite crystals
Blue lace agate
Citrine
Quartz
Quartz polished stone
Unakite mineral stone
Hope Chrysoberyl gemstone
Crystalline limestone rock
Basaltic dyke rock
Opal gem necklace
Jade stone
Silver wire, mine specimen
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Tiger Eye quartz gemstone
Avanturine smooth gemstone
Botswana agate stones
Round agate thunderegg
Two agate thundereggs
Turritella agate
Agate slice
Botswana agate stone
Amethyst geode
Amethyst geodes
Desert rose mineral clusters
Dolomite mineral
Carnelian gemstone
Fuchsite mineral stone
Haematite mineral rock
Haematite group of stones
Haematite tumblestone polished stone
Yellow Jasper
Leopardskin jasper stone
Quartz filled concretion
Garnet crystals on schist
Sample of basalt
Tourmaline gemstone
Quartz crystal, SEM
Kyanite
Wavellite
Barite crystals
Satin spar, a form of gypsum, close-up
Sample of limestone