Diamond in host rock
Graphite
Crushed diamond, SEM
Diamond
Uncut diamond
Diamond gemstones
Diamonds
Microdiamond crystal
Cut diamond
Uncut diamonds
Grossular crystals in host rock
Opalised fossil
Asscher cut diamond gemstone
Synthetic diamond film production
Synthetic diamond film
Pre-cut diamond forms
Nephrite crystals
Tremolite crystals
Pyrargyrite crystals
Rough emeralds
Diamond in kimberlite
Diamond cutting
Sapphire crystal
Ironstone matrix with potch opal
Pink diamonds
Cut and polished diamonds
Black tourmaline in mica schist
Garnet crystals on schist
Almandine crystals in schist
Emeralds
Peridotite
Garnet in peridotite
Topaz crystal in albite and microcline
Emerald crystal, close up
Olivine peridot crystal, close up
Schorl and quartz crystals in groundmass
Wollastonite with kolophonite
Tourmaline crystals in quartzite
Diamond with garnet inclusion
Azurite crystals, SEM
Pyrite cubes in host rock
Beryl crystals
Carbon
Native gold
Diamond cleaning
Rough diamond
Hemimorphite
Nagyagite
Cullinan diamond replica
Diamond drill bit
Diamond processing, Siberia, Russia
Gold in its host rock
Lazurite crystals in a matrix of calcite
Cushion cut diamond gemstone
Brilliant cut diamond gemstones
Brilliant cut diamond gemstone
Tourmaline
Tourmaline crystals in quartz
Andradite crystals
Citrine
Almandine mineral sample
Olivine mineral sample
Topaz crystals
Pyrope sand
Blue sapphire stone
Blue Sapphire uncut stone
Opal gem necklace
Jade stone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Garnet gemstone
Amethyst filled geode
Clinochlore with garnets
Ruby crystal and gems
Fire opal
Topaz specimens
Amethyst geode interior
Spessartine garnet
Watermelon tourmaline
Grossular dodecahedral crystal
Elbaite mineral
Dravite mineral
Andradite mineral
Demantoid
Amethyst and chalcedony
Prismatic amethyst crystal
Mineral samples
Grossular garnet crystals on rock surface
Elbaite mineral (tourmaline)
Amethyst
Synthetic gemstones
Tourmaline gemstone
First laser
Lapis lazuli crystals
Uncut diamond from Africa
Yellow diamond
Herkimer diamonds of quartz mineral
Green hemimorphite in groundmass
Almandine
Heat-treated amethyst
Elbaite on albite and quartz
Graphic tourmaline, light micrograph
Cut Diamond with Colour Refractions
Microdiamond crystal, SEM
Pyrite crystals in their host rock
Beryl stone
Crystals of haematite in quartz
Pseudomorphic crystal growth
Titanite crystals in actinolite
Galenite and quartz crystals
Colourful crystals
Agate mineral rock cross section
Jasp agate stone
Jasp agate polished surface
Egyptian jasper stone
Tellurium in quartz
Hessite in quartz
Emerald crystal in quartz
Chabazite crystals in quartz
Native gold on quartz
Emerald in quartz