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