Jeweller at work, 19th century
Types of diamonds, 19th century
19th-century diamond mining, Brazil
Rough opal
Gemstones, composite image
Asscher cut diamond gemstone
Pink diamonds
Jasper
Tiger eye
Quartz monzonite
Quartz boulder
Brecciated quartz
Herkimer diamonds
Jasper breccia rock
First laser
Illustrations of Indian diamonds
Synthetic diamond film production
Synthetic diamond film
Mineral exploration drilling, Kenya
Mining core samples, Kenya
Jewellery polishing, 19th century
Diamond processing, Siberia, Russia
Rough diamond
Red sandstone
Red and white sandstone
Diamond drill bit
Pre-cut diamond forms
Sample of Labradorite
Turquoise mineral
Gold leaf production, 19th-century China
Fluorite
Hawk's Eye
Tiger's Eye
Diamond-tipped drill, 19th century
Three lumps of gold, close up
Amethyst
Aquamarine gemstones
Raw aquamarine crystal
Diamonds
Diamond
Tool holding diamond
Colourful gemstones
Moonstones
Opal
Tanzanite
Corundum crystal
Cordierite crystal
Torbernite crystal
Topaz crystal in albite and microcline
Emerald crystal, close up
Imperial Jade streaked with green
Ironstone matrix with potch opal
Prismatic amethyst crystal
Olivine peridot crystal, close up
Sherry Topaz
Labradorite sunstone
Potch opal with smooth and rough surface
Cut Diaspore gemstone
Cut Diopside gemstone
Cut Emerald gemstone
Ammolite gemstone
Oval polished green Chrysoprase
Round polished Common Opal
Copal
Oval Sunstone gemstone
Amazonite mineral
Grossular garnet crystals on rock surface
Schorl and quartz crystals in groundmass
Turquoise on rock surface, close-up
Mimetite in prismatic crystal form
Turquoise stone set in gold ring
Rose Quartz
Emerald in Rock Groundmass
Pieces of red spinel
Citrine
Cuprite crystals, close-up
A lump of translucent agate
Elbaite mineral (tourmaline)
Sphene crystals in groundmass, close-up
Blue benitoite and white natrolite
Five polished ruby gemstones
Benitoite
Pallasite meteorite
Opal jewellery
Emeralds
Tourmaline crystals in quartz
Almandine crystals in schist
Hiddenite crystal
Gneiss with garnet
Lapis lazuli specimen
Pink rectangular gemstone
Diamond ring, close-up
Chrysocolla
Azurite crystals
Carnelian agate
Quartz
Black tourmaline in mica schist
Native gold
Iron oxide precipitation in agate
Quartz crystals
Smoky quartz crystals
Andradite crystals
Magnetite in quartz
Cuprocassiterite in quartz mica schist
Cut and polished jasper
Peridot
Siderite mineral
Almandine mineral sample
Olivine mineral sample
Quartz and schist outcrops
Cubic zirconia
Nephrite crystals
Moonstone gemstones
Titanite bearing granite
Pseudomorphic crystal growth
Titanite crystals in actinolite
Quartz in sphalerite
Molybdenite in quartz monzonite
Galenite and quartz crystals
Agate in amethyst
Laguna agate
Moctezuma agate