Tourmaline gemstone
Verdite green tourmaline gemstone
Opal gemstone
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Schorl tourmaline crystal stone
Bi-coloured tourmaline crystals
Tourmaline gemstones in quartz
Hawk's Eye quartz stone
Black opal gemstone
Fire opal birthstone
Tourmaline
Tourmaline Pegmatite
Tourmaline gem
Tourmaline crystals
Tourmaline pegmatite
Watermelon tourmaline
Tourmaline crystals in matrix
Elbaite crystal, variety Tourmaline
Albite with Tourmaline
Tourmaline crystals on Albite
Tourmaline crystals in quartz
Schorl variety of Tourmaline, Namibia
Opal rock
Alexandrite stone
Sapphire gemstone
Turquoise stone
Tourmaline specimen
Tourmaline gemstones
Tourmaline quartz
Raw tourmaline crystal
Tourmaline gemstones and crystal
Elbaite mineral (tourmaline)
Tourmaline gem, 365 carat
Blue tourmaline crystals
Tourmaline in quartz
Tourmaline mica in slate
Tourmaline in gneiss rock
Black tourmaline in mica schist
Tourmaline Crystals, Minas Gerais, Brazil
Green Tourmaline in Muscovite, Maine
Opal mineral stone
Chrysoberyl yellow beryllium gemstone
Schorl and quartz crystals in groundmass
Dravite mineral
Topaz gemstone
Opal birthstone
Aquamarine gemstone
Tourmaline crystal
紅電気石
Quartz and green tourmaline crystals
Pink tourmaline crystals growing on mica
Tourmaline mineral, light micrograph
電気石
Schorl, the black variety of Tourmaline
Elbaite mineral
Granitic pegmatite
Opal gemstones
Single piece of blue opal
Trillion cut tourmaline gemstone
Rubellite I
Rubellite II
Cut green Paraiba Tourmaline gemstone
Tourmaline crystals in quartzite
Yellow-green Tourmaline rough
Tourmaline crystal specimen
Tourmaline crystal specimens
Rubellite Tourmaline in Lepidolite Mica
Orthoclase adenoma moonstone gemstone
Crystals of green toumaline and pink lepidolite
Cut Watermelon Tourmaline gemstone
Moonstone gemstones
Rubellite tourmaline pendant
Tourmaline crystal, thin section
Black tourmaline, SEM
Tourmaline embedded in feldspar rock
Polarized light experiments, 1847
オパール
Granite specimen
Blue opal gemstones
Opal gem necklace
Cut green Tourmaline gemstone
Topaz gemstones
Turquoise gemstones
Garnet gemstones
Graphic tourmaline, light micrograph
Elbaite on albite and quartz
Mylonite, light micrograph
Opal
Peridot gemstones
Amethyst gemstones
Emerald gemstones
Luxulyanite, thin section, LM
A diamond
Tourmaline schorl specimen
Opal specimen
Opal specimens
Amethyst quartz birthstone
Citrine quartz birthstone
Ruby in tweezers, studio shot
Emerald in tweezers, studio shot
Jewel in tweezers, studio shot
Opal in its host rock
Opal on bedrock
蛋白石
ベージュの布上に置かれた花をモチーフにしたブローチ
Schorl (black Toutmaline)
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Opal gem and rock
2つのダイヤモンド
Tourmaline on quartz
Demantoid garnet gemstone
Peridot gemstone
Sapphire gemstones
Pink Diamonds
Single large diamond, close-up (still life)
Assorted jewels
Diamond gemstones
Precious gemstones
Gem
Diamond reflected on black surface
Diamond
Cut Diamond with Colour Refractions
Ruby gemstones
A cut and polished fire opal
Slice through fossilised wood revealing opal
Lazurite birthstone
Opalised fossil
Round polished Common Opal
Fire opal
Opal surface
Tourmaline cross section
Large diamond in box
Tweezers holding diamond, close-up
Diamonds on red velvet, elevated view
Rough pinkish-red Rubellite
ダイヤモンド
Diamond, side view, studio shot
Diamond, studio shot
Cut Fire Opal gemstone
Three pieces of blue opal
Diamond, close-up
Boulder opal formation
Opal specimen and cut stone
Rainbow light diamond, close-up
Fire Opal