Diamond
Cut and polished diamonds
Crushed diamond, SEM
Diamond gemstones
Diamonds
Microdiamond crystal
Diamond cleaning
Cut diamond
Cullinan diamond replica
Synthetic diamond film production
Synthetic diamond film
Diamond in kimberlite
Pre-cut diamond forms
Microdiamond crystal, SEM
Carbon
Uncut diamond
Chiastolite section
Diamond with garnet inclusion
Sylvanite crystals
Diamond in host rock
Round cut diamond
Radiant emerald cut diamond
Emerald cut diamond
Asscher cut diamond
Marquise cut diamond
Pear cut diamond
Square princess cut diamond
The Centenary Diamond
Diamond grading certificate
Herkimer diamonds of quartz mineral
Uncut diamonds
Graphite on calcite crystals
Trillion cut diamond
Uncut diamond from Africa
Asscher cut diamond gemstone
Diamonds under UV light
Humphry Davy (1778-1829), English chemist
Yellow diamond
Diamond ring
Diamond necklace
Amethyst crystals, Kirlian photograph
Diamonds and diamond ring
Tool holding diamond
Large citrine gemstone
Amethyst gemstones and crystal
Pink diamonds
Sapphire crystal
Ironstone matrix with potch opal
Unpolished topaz crystals
Chalcopyrite and quartz crystals
Pyrite
Pyritohedral crystals, close up
Wedge shaped titanite crystal
Apophyllite crystals
Apophyllite on calcite
Cushion cut diamond gemstone
Brilliant cut diamond gemstones
Brilliant cut diamond gemstone
Rubies and sapphire
Diamonds and gemology tools
Diamonds on a scoop
Diamonds and aquamarine gemstones
Rough diamond
Herkimer Diamond
Diamond accessary
Large diamond
Diamond drill bit
Diamond processing, Siberia, Russia
Venetia Diamond Mine, South Africa
Diamond against black background
Diamond refracting light
Diamond theft reward poster, April 1965
Diamond in rock groundmass, close-up
Diamond cutting
Tetrahedrite
Raw amethyst crystal
Raw citrine crystal
Raw garnet crystal
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline crystal, thin section
Citrine crystals
Tourmaline crystals in quartz
Tourmaline in quartz
Andradite, New Jersey
Black tourmaline in mica schist
Citrine
Tourmaline
Andradite crystals
Amethyst
Ruby
Almandine mineral sample
Olivine mineral sample
Garnets in micaschist, light micrograph
Nephrite crystals
Tremolite crystals
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