Crushed diamond, SEM
Diamond
Diamonds
Cut and polished diamonds
Diamond in host rock
Diamond gemstones
Microdiamond crystal
Diamond cleaning
Cullinan diamond replica
Synthetic diamond film production
Synthetic diamond film
Diamond in kimberlite
Pre-cut diamond forms
Cut diamond
Carbon
Microdiamond crystal, SEM
Sylvanite crystals
Uncut diamond
Humphry Davy (1778-1829), English chemist
Uncut diamonds
Graphite on calcite crystals
Asscher cut diamond gemstone
Diamond with garnet inclusion
Chiastolite section
Apophyllite crystals
Apophyllite on calcite
Nephrite crystals
Tremolite crystals
Wollastonite with kolophonite
Pyrargyrite crystals
Opalised fossil
Grossular crystals in host rock
Rough emeralds
Tourmaline crystals in quartzite
Lapis lazuli crystals
Pink diamonds
Large citrine gemstone
Sapphire crystal
Ironstone matrix with potch opal
Herkimer diamonds of quartz mineral
Chalcopyrite and quartz crystals
Graphite
Diamond cutting
Tetrahedrite
Rough diamond
Ruby
Diamond drill bit
The Centenary Diamond
Diamond grading certificate
Diamond processing, Siberia, Russia
Trillion cut diamond
Venetia Diamond Mine, South Africa
Diamond theft reward poster, April 1965
Black tourmaline in mica schist
Amethyst
Citrine
Tourmaline
Tourmaline crystals in quartz
Andradite crystals
Almandine mineral sample
Olivine mineral sample
Garnets in micaschist, light micrograph
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
Amethyst geode
Amethyst geodes
Garnet gemstone
Amethyst filled geode
Clinochlore with garnets
Ruby crystal and gems
Garnet crystals on schist
Amethyst crystals
Rubellite tourmaline pendant
Uvarovite garnet crystals
Fire opal
'Black' opal cabochon specimen
Orange sapphire gemstone
Topaz gemstone
Topaz specimens
Almandine crystals in schist
Amethyst geode interior
Tourmaline crystal specimen
Tourmaline crystal specimens
Spessartine garnet
Watermelon tourmaline
Grossular dodecahedral crystal
Elbaite mineral
Dravite mineral
Andradite mineral
Demantoid
Emeralds
Peridotite
Garnet in peridotite
Amethyst and chalcedony
Topaz crystal in albite and microcline
Emerald crystal, close up
Prismatic amethyst crystal
Olivine peridot crystal, close up
Heat-treated amethyst
Elbaite on albite and quartz
Mineral samples
Grossular garnet crystals on rock surface
Schorl and quartz crystals in groundmass
Tourmaline embedded in feldspar rock
Elbaite mineral (tourmaline)
Opal
Uncut diamond from Africa
Arsenopyrite
Yellow diamond
Gemstones and light dispersion
Synthetic gemstones
Tourmaline gemstone
First laser
Sulphur crystals