Pieces of red spinel
Cut Red Spinel gemstone
Round cut mauve Spinel gemstone
Spinel crystal
Olivine mineral sample
Synthetic spinel
Tanzanite
Diamonds
Aquamarine gemstones
Diamond
Tool holding diamond
Moonstones
Colourful gemstones
Spinel, Bridgewater, Vermont
Polished Chrysocolla cabochons
Chromite
Pink rectangular gemstone
Cut Diaspore gemstone
Diamonds and aquamarine gemstones
Amethyst gemstones
Tool holding amethyst gemstone
Aquamarine gemstones and crystal
Emeralds
Tiger eye
Quartz monzonite
Herkimer diamonds
Purple rectangular gemstone
Polished oval Hawk's Eye Quartz
Spine crystals in quartz groundmass
Spinel crystals, New York, USA
Jasper
Quartz boulder
Brecciated quartz
Jasper breccia rock
Asscher cut diamond gemstone
Pink diamonds
Emerald crystal, Colombia
Tweezers holding alexandrite gemstone
Amethyst gemstones and crystal
Diamonds and diamond ring
Diamond ring
Diamond necklace
Diamonds and gemology tools
Diamonds on a scoop
Moonstone
Mystic topaz gemstone
Peridot gemstones
Tourmaline
The Centenary Diamond
Diamonds under UV light
Wedge shaped titanite crystal
Square cut purple Amethyst gemstone
Cut Fire Opal gemstone
Cut Ruby gemstone
Cut Sapphire gemstone
Oval cut Sphene gemstone
Round cut diamond
Round cut peridot
Princess cut garnet
Emerald cut ruby
Oval cut iolite
Round cut garnet
Heart cut sapphire
Round cut iolite
Pear cut iolite
Oval cut peridot
Radiant emerald cut diamond
Emerald cut diamond
Asscher cut diamond
Marquise cut diamond
Pear cut diamond
Square princess cut diamond
Hawk's Eye
Tiger's Eye
Assortment of Gemstones
Cubic zirconia
Fluorite
Red rectangular gemstone
Cut yellow Vesuvianite gemstone
Cut Sphalerite gemstone
Zincite in fraklinite
Blue gahnite octahedral crystal in rock groundmass
Mimetite in prismatic crystal form
Trillion cut diamond
Diamond grading certificate
Tourmaline crystals in quartz
Sand, SEM
Quartz crystals
Rough opal
Dunite rock, light micrograph
Alexandrite gemstone
Amethyst gemstone
Blue rectangular gemstone
Cut Kyanite gemstone
Cut Rose Quartz gemstone
Cut Peridot gemstone
Cut yellow sapphire gemstone
Pear cut citrine
Princess cut citrine
Round cut emerald
Oval cut amethyst
Oval cut emerald
Round cut amethyst
Radiant cut emerald
Trillion cut emerald
Pear cut amethyst
Oval cut Citrine
Round cut citrine
Oval cut citrine
Square emerald cut citrine
Asscher cut citrine
Raw aquamarine crystal
Opal