Gypsum crystals
Desert rose barite
Desert rose of gypsum crystals
Desert rose mineral clusters
Rosette-shaped gypsum known as a desert rose
Acicular form of gypsum
Baryte crystals
Fluorite crystals
Selenite crystals
Twinned staurolite crystals
Picromerite mineral
Apatite crystals
Fluorspar crystals
Twinned fluorite crystals
Prismatic beryl crystal
Axinite
Thulite mineral
Berzeliite mineral
Clinochlore
Scolecite mineral
デザートローズ
Gypsum stone
Riebeckite crystals in groundmass
Prismatic parallel crystals of allanite
Clinochlore crystals in rock groundmass
Calcite spherulites
Apatite crystal
Malachite mineral sample
Cobalt calcite mineral sample
Selenite mineral sample
Chromite
Porphyritic texture in an igneous rock
Prehnite and okenite minerals
Boleite crystals in gypsum groundmass
Azurite crystals
Calcite crystals
Quartz crystals
Apophyllite crystals
Stilbite crystals
Nephrite crystals
Colourful crystals
Tremolite crystals
Hemimorphite crystals
Sulphur crystals
Pyrite crystals
Pyrargyrite crystals
Aragonite crystals
Green spherical prehnite crystals
Glaucodot crystals in groundmass
Coral calcite crystals
Brazilianite crystals in calcite
Aragonite crystals with sulphur
Pink calcite crystals
Tourmaline crystals in quartz
Iron pyrite crystals
Garnet crystals on schist
Scapolite crystals in rock groundmass
Rhodonite crystals in rock groundmass
, showing formation of blue crystals
Bismuthinite crystals in rock groundmass
Sylvanite crystals in calcite groundmass
Schorl and quartz crystals in groundmass
Sphene crystals in groundmass, close-up
Kyanite mineral
Dioptase mineral sample
Childrenite crystal in quartz
Dolomite in Quartz Groundmass
Aegirine crystal in rock groundmass
Microcline in rock groundmass
Scolecite crystals
Strontianite crystals
Chalcocite crystals
Arsenopyrite crystals
Beryl crystals
Andradite crystals
Petzite crystals
Topaz crystals
Arsenopyrite crystals, close-up
Pyrrhotite crystals, close-up
Magnesite crystals in groundmass
Dioptase crystals in groundmass
Cobaltite and chalcopyrite crystals
Atacamite and malachite crystals
Apophyllite crystals, close-up
Titanite crystals in actinolite
Quartz encrusted calcite crystals
Vanadinite crystals in rock groundmass
Muscovite crystals in rock groundmass
Agate silica crystals in stone
Selenite gypsum
Smoky quartz crystals
Silver crystals in calcite
Galenite and quartz crystals
Chabazite crystals in quartz
Sphalerite and ankerite crystals
Almandine crystals in schist
Orthoclase and quartz crystals
Dendritic mineral crystals
Purple fluorite crystals
Grossular garnet crystals on rock surface
Hematite crystals
Amethyst crystals
Crystals of haematite in quartz
Grossular crystals in host rock
Pyrite crystals in their host rock
Chalcopyrite and quartz crystals
Uvarovite garnet crystals
Tabular muscovite crystals and apatite
Sapphire crystals in rock groundmass
Willemite crystal
Witherite mineral in crystal form
Bornite, close-up
Topaz crystal in albite and microcline
Tabular stilbite on rock groundmass
Emerald crystal, close up
Ironstone matrix with potch opal
Green apophyllite in stilbite groundmass
Brown monticellite
Sodalite glowing yellow in UV light
Prehnite and calcite in groundmass
Crystalline hemimorphite in groundmass
Beryl in rock groundmass, close-up
Franklinitein calcite groundmass
Lump of yellow sulphur
Amethyst
Quartz
Carnelian pebble
Brecciated agate
Flos-ferri aragonite
Siderite mineral
Titanite bearing granite
Pseudomorphic crystal growth
Molybdenite in quartz monzonite
Beryl gem, cut stone
Agate mineral rock cross section
Cross section of agate stone
Agate stone with white layers
Fire or MexicAgate
Amethyst filled geode
Apophyllite on calcite
Clinochlore with garnets
Tellurium in quartz
Calcite
Haematite
Septarian nodule
Topaz specimens
Pyrite
Tourmaline
Spessartine garnet
Watermelon tourmaline
Dravite mineral
Andradite mineral
Rhodochrosite mineral
Prehnite mineral
Demantoid
Calcium carbonate precipitation
Uncut diamonds
Autunite crystals, close-up
Prismatic Piemontite crystals