Haematite specimen
Banded iron specimen
Haematite mineral specimen
Haematite crystal
Sample of haematite
Haematite mineral rock
Haematite
Haematite (kidney ore)
Haematite group of stones
Haematite tumblestone polished stone
Haematite ore
Crystals of haematite in quartz
Hematite crystals
Banded iron formation
Hematite ore of Iron, Brazil
Hematite, an ore of iron
Hematite, an iron ore
Hematite, an iron ore, Minnesota, USA
Hematite, England
Lumps of hematite iron ore
Hematite, close-up
Brecciated Agate stone
Ruby
Dendritic copper specimen
Hematite rock
Hematite, an ore of Iron, Massachusetts
Hematite, Pencil Ore variety, England
Haematite on Mars, satellite image
Mineral precipitation in agate
Reniform Hematite
Foliar Hematite
Barite crystals with Hematite
Specularite and Quartz with overgrowing hematite
Botryoidal hematite
Molybdenite specimen
Haematite, SEM
Opal specimen and cut stone
Hematite kidney ore
Pyrite with Hematite, Italy
Hematite, Minasgerais, Brazil
赤鉄鉱
Obsidian specimen
Hyacinth quartz
Allende meteorite specimen
Nephrite jade specimen
'Black' opal cabochon specimen
Sulphur crystals
Belt-hook carved in lapis lazuli
Boulder opal formation
Hemimorphite crystals
Strontianite crystals
Carved malachite column
Rhodonite specimen
Agate lava geode
Martian rock research
Granite specimen
Quartzite specimen
Amethyst
Polished and cut turquoise
Gypsum crystals
Amethyst crystals
Uvarovite garnet crystals
Orange sapphire gemstone
Fluorite crystals
Topaz gemstone
Silver wire, mine specimen
Muscovite
Calcite crystal specimen
Axinite mineral specimen
Baryte mineral specimen
Chromite
Uraninite in calcite
Malachite-based mineral deposit
Fluorspar crystals
Banded iron ore
Actinolite crystals
Silver deposits in quartzite
Pyrite crystals
Hematite, bead, oval cabochon, marquise cabochon
Lapis lazuli specimen
Petrified wood, fossil specimen
Bournonite
Banded iron formation (BIF)
Banded Ironstone Formation (BIF)
Rubellite tourmaline pendant
Jadeite carved dish from China
Araucarioxylon sp., fossil conifer
Pyrite crystals in their host rock
Cobaltine mineral, cobalt ore
Chrysocolla, macrophotograph
Chrysocolla mineral
Stibnite
Tremolite crystals
Zinc ore under ultraviolet light
Zinc ore
Native copper
Tiger's eye and Hawk's eye gemstones
Tourmaline crystal specimen
ruddle
Quartz types
Marble mineral specimen
Kunzite crystal and cut stone
Limonite specimen
Zincite specimen
Hematite gemstone on white background
Chalcosite
Cerussite
Magnetite and calcite
Magnetite in quartz
Cuprocassiterite in quartz mica schist
Pseudomorphic crystal growth
Galenite and quartz crystals
Pyrolusite in quartz
Diamond processing, Siberia, Russia
Opal on bedrock
Molybdenite mineral, molybdenum ore
Vanadinite specimen
Neolithic axe
Amethyst geode interior
Large citrine gemstone
Tourmaline crystal specimens
Chrysocolla
Tourmaline specimen
Diamond with garnet inclusion
Baryte crystals
Larimar Pectolite
Prismatic beryl crystal
Blue Cavansite rosette in rock groundmass
Yellow cancrinite in syenite
Sodalite
Cleaved calcite rhombs, close-up
Hypersthene, close-up
Banded flint
Botryoidal chalcedony, close-up
Cordierite crystals in rock groundmass
Sample of rose quartz
Axinite
Labradorite
Malachite
Twinned staurolite crystals
Tiger eye
Campo del Cielo meteorite fragment
Quartz monzonite
Fairburn agate
Union road agate
Lysite agate
Lake Superior agate
Paint rock agate
Paul Bunyon plume agate
Siam Siding agate
Plume agate
Fourth of July Butte agate
Agate
Pompon agate
Blue Bed thunder egg agate
Priday plume agate
Antelope agate
Sweet home agate
Condor agate