Diamonds
Diamond
Cut and polished diamonds
Crushed diamond, SEM
Diamond gemstones
Microdiamond crystal
Pre-cut diamond forms
Cut diamond
Synthetic diamond film production
Synthetic diamond film
Diamond cleaning
Carbon
Uncut diamonds
Cullinan diamond replica
Diamond in kimberlite
Microdiamond crystal, SEM
Herkimer diamonds of quartz mineral
Chiastolite section
Pink diamonds
Uncut diamond
Sylvanite crystals
Asscher cut diamond gemstone
Uncut diamond from Africa
Diamond with garnet inclusion
Ironstone matrix with potch opal
Tourmaline crystals in quartz
Rough diamonds
Pyrite
Diamond in host rock
Graphite on calcite crystals
Yellow diamond
Illustrations of Indian diamonds
Unpolished topaz crystals
Quartz vein
Quartz crystal from Sentis, Switzerland.
Quartz crystals
Malachite
Humphry Davy (1778-1829), English chemist
Raw amethyst crystal
Raw citrine crystal
Raw tourmaline crystal
Tourmaline gemstones and crystal
Topaz crystal in albite and microcline
Emerald crystal, close up
Prismatic amethyst crystal
Mass of prismatic aquamarine crystals
Olivine peridot crystal, close up
Grossular garnet crystals on rock surface
Schorl and quartz crystals in groundmass
Tourmaline Pegmatite
Elbaite mineral (tourmaline)
Andradite, New Jersey
Tourmaline in quartz
Calcite on amethyst
Tourmaline quartz
Lazurite crystals in a matrix of calcite
Citrine crystals
Black tourmaline in mica schist
Andradite crystals
Citrine
Almandine mineral sample
Olivine mineral sample
Nephrite crystals
Topaz crystals
Pyrope sand
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
Garnet crystals on schist
Fire opal
Topaz specimens
Grossular crystals in host rock
Rough emeralds
Almandine crystals in schist
Pyrargyrite crystals
Amethyst geode interior
Tourmaline
Spessartine garnet
Watermelon tourmaline
Grossular dodecahedral crystal
Elbaite mineral
Dravite mineral
Andradite mineral
Demantoid
Amethyst crystals, light micrograph
Deformation of garnet crystal
Tourmaline crystal
Peridotite
Garnet in peridotite
Tourmaline in gneiss rock
Sample of sapphire
Amethyst crystals
Aquamarine crystals
Amethyst and chalcedony
Quartz variation, Herkimer Diamonds
Rubies and sapphire
Factory worker selecting diamonds, Angola
Large citrine gemstone
Fortification agate
Agate
Beryl stone
Rough diamond
Round cut diamond
Radiant emerald cut diamond
Emerald cut diamond
Asscher cut diamond