Slice through fossilised wood revealing opal
オパール
Fire opal birthstone
Single piece of blue opal
A cut and polished fire opal
Opal gemstones
Opal rock
Black opal gemstone
Opal mineral stone
Opal birthstone
Opal
Blue opal gemstones
Three pieces of blue opal
蛋白石
Opal specimens
Opal gemstone
Opal gem and rock
Opal gem necklace
Opal in its host rock
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Opal specimen
Fire opal
Opal surface
Opalised fossil
Round polished Common Opal
Opal on bedrock
Opal Bivalve fossil Coober Pedy Australia
Fire Opal
Boulder opal formation
Opal specimen and cut stone
'Black' opal cabochon specimen
Cut Fire Opal gemstone
Verdite green tourmaline gemstone
Tourmaline gemstone
Rubellite I
Rubellite II
紅電気石
電気石
Mineral samples
Tourmaline gem
Tourmaline pegmatite
Schorl and quartz crystals in groundmass
Tourmaline Pegmatite
Raw tourmaline crystal
Bi-coloured tourmaline crystals
Blue tourmaline crystals
Detail of brushed copper
Tourmaline gem, 365 carat
Luxulyanite, thin section, LM
Black tourmaline in mica schist
Tourmaline mica in slate
Granitic pegmatite
Green Tourmaline in Muscovite, Maine
Tourmaline crystals in matrix
Tourmaline
Elbaite crystal, variety Tourmaline
Schorl variety of Tourmaline, Namibia
Tourmaline crystals
Albite with Tourmaline
Tourmaline crystals on Albite
Watermelon tourmaline
Dravite mineral
Tourmaline crystals in quartz
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Pink tourmaline crystals growing on mica
Crystals of green toumaline and pink lepidolite
Close up of cut diamond
ムーンストーン
Tourmaline mineral, light micrograph
Tourmaline gemstones and crystal
Tourmaline specimen
Elbaite mineral
Elbaite mineral (tourmaline)
Tourmaline gemstones in quartz
Diamond against black background
Diamond refracting light
ダイヤモンド
Garnet.
Citrine.
Tarquoise.
Diamond
Moonstone.
Tourmaline in quartz
Tourmaline in gneiss rock
Tourmaline gemstones
Tourmaline quartz
Tourmaline Crystals, Minas Gerais, Brazil
Limburgite
Single large diamond, close-up (still life)
Yellow diamond
Diamond, side view, studio shot
Diamond, studio shot
Demantoid garnet gemstone
Kornerupine gemstone
Uncut emeralds
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)
Polarized light experiments, 1847
Tourmaline crystal
Quartz and green tourmaline crystals
Pendant with jade
Pendant with pearl
Pendant with diamond
Diamond, close-up
Sapphire gemstone
Citrine quartz birthstone
Rainbow light diamond, close-up
Cut and polished crystal of imperial topaz
A diamond
Amethyst crystals
Rubellite Tourmaline in Lepidolite Mica
Granite specimen
黄玉
Schorl, the black variety of Tourmaline
Topaz gemstone
Large diamond
ブリリアンカットされたダイヤの正面をズーム
Citrine crystals
Display of Rings Made with Precious Stones
Diamond emitting light spectrum, close-up
Garnet in micaschist I
Turquoise stones
Amethyst quartz birthstone
Heart to Heart
Tweezers holding small purple diamond, close-up
Close up of cut diamonds
Automated diamond cutting
Insects fossilised in amber
Gem
Moonstones
Orthoclase adenoma moonstone gemstone
Diamond in jewelry box
Diamond reflected on black surface
Blue Diamond
Lazurite birthstone
Elbaite on albite and quartz
Snowflake obsidian
Tourmaline crystals in quartzite
Diamond ring
Zaratite
Melanite
Amethyst, a quartz crystal