Cut Scapolite gemstone
Cut Scapolite round gemstone
Cut Cordierite (Iolite) gemstone
Cut Kyanite gemstone
Trillion cut tourmaline gemstone
Cut green Paraiba Tourmaline gemstone
Cut Zircon gemstone
Round cut red Andesine
Cut pink topaz gemstone
Cut green Tourmaline gemstone
Cut pink Topaz gemstone
Cut yellow Vesuvianite gemstone
Cut Quartz gemstone
Cut Watermelon Tourmaline gemstone
Cut Indicolite gemstone
Cut Spessartine gemstone
Cut Pyrope gemstone
Oval cut Apatite gemstone
Cut Diopside gemstone
Oval cut Sphene gemstone
Oval cut red Rhodochrosite gemstone
Garnet
Cut Red Spinel gemstone
Round cut mauve Spinel gemstone
Yellow-green Tourmaline rough
Cut pink-violet Kunzite gemstone
Labradorite sunstone
Scapolite, 1292 carat
Scapolite crystals
Tourmaline cross section
Cut Aquamarine gemstone
Cut Peridot gemstone
Cut Ruby gemstone
Cut Sapphire gemstone
Cut yellow sapphire gemstone
Scapolite
Moss agate
Square cut purple Amethyst gemstone
Cut Diaspore gemstone
Ruby in zoisite
Tiger eye, polished surface
Tiger eye, thin section micrograph
Tiger eye, light micrograph
Scapolite mineral sample
Lapis lazuli, SEM
Concentric banding in agate
Tourmaline
Emerald
Almandine
Tourmaline on quartz
Prehnite and okenite
Rough pinkish-red Rubellite
Rare bright green Uvarovite Garnet
Gneiss with garnet, light micrograph
Gneiss with garnet
Scapolite crystals in rock groundmass
Cut Sphalerite gemstone
Tourmaline unworked stones
Cut Rose Quartz gemstone
Zircon crystals on host rock
Rose Quartz
Citrine
Colourful gemstones
Fluorite
Moonstone
Oval polished Onyx
Dendrites in agate
Turquoise gemstone
Cushion cut diamond gemstone
Brilliant cut diamond gemstone
Yellow crystal
Raw garnet crystal
Tourmaline crystal, thin section
Black tourmaline, SEM
Fire Opal
Amethyst gemstone
Oval Sunstone gemstone
Agate
Chalcedony
Pallasite meteorite fragment
Mystic topaz gemstone
Sample of feldspar
Lizardite in serpentine rock
Aventurine
Uncut emeralds
Heart cut diamond gemstone
Cut Fire Opal gemstone
Sample of muscovite
Stilbite crystal group
Axinite
Chrysocolla mineral
Beryl crystals
Quartz coated with silica
Sherry Topaz
Peridot pebble and mixed-cut peridot
blue apatite
Purple fluorite
Polished oval Hawk's Eye Quartz
Oval polished Smithsonite
Alexandrite gemstone
Citrine gemstone
Cut Heliodor gemstone
Oval cut citrine gemstone
Carnelian
Brecciated jasper
Amethyst crystals
Leopard skin jasper close
Leopard skin jasper II
Leopard skin jasper I
Barred olivine chondrule
Emerald cut diamond gemstone
Asscher cut diamond gemstone
Pear cut diamond gemstone
Twinned augite crystals
Smoky quartz
Tweezers holding alexandrite gemstone
Blue rectangular gemstone
Asscher cut diamond gemstones
Brilliant cut diamond gemstones
Oval cut purple sapphire gemstone
Brilliant cut pink diamond gemstone
Rhodonite
Basalt, light micrograph
Pink beryl crystal, SEM
Opal
Oval polished green Chrysoprase
Citrine crystal group
Diamond
Wedge shaped titanite crystal
Lapis lazuli crystals I
Lapis lazuli crystals II
Asbestos veins in serpentinite
Feldspar and quartz
Peridot gemstone
Tool holding amethyst gemstone
Selenite gypsum
Apophyllite crystals
Fayalite
Cut Emerald gemstone
Rubies
Sapphires
Enstatite
Malachite and chrysocolla minerals
Scolecite
Labradorite
Blue labradorite
Large citrine gemstone
Cut and polished Alexandrite gemstone
Rutile crystals
Calcite crystal
Calcite
Quartz encrusted calcite crystals
Purple rectangular gemstone
Pink rectangular gemstone
Red rectangular gemstone
Citrine gemstones and crystal
Citrine gemstones
Native gold on quartz
Quartz crystals, SEM