Rubellite Tourmaline in Lepidolite Mica
Pink tourmaline crystals growing on mica
Crystals of green toumaline and pink lepidolite
Rubellite I
Rubellite II
Rubellite tourmaline pendant
Tourmaline pegmatite
Tourmaline Pegmatite
Green Tourmaline in Muscovite, Maine
Rough pinkish-red Rubellite
Tourmaline mica in slate
Verdite green tourmaline gemstone
Black tourmaline in mica schist
Bi-coloured tourmaline crystals
Graphic tourmaline, light micrograph
Tourmaline gemstone
Lepidolite Crystal Gemstone
Tourmaline gem
Tourmaline crystals
Granite specimen
Tourmaline gem, 365 carat
Tourmaline mineral, light micrograph
Tourmaline crystals in quartzite
Albite with Tourmaline
Tourmaline crystals on Albite
Tourmaline crystals in matrix
Schorl variety of Tourmaline, Namibia
Tourmaline Crystals, Minas Gerais, Brazil
Schorl, the black variety of Tourmaline
Tourmaline
Tourmaline specimen
Watermelon tourmaline
Tourmaline crystal
Tourmaline gemstones
Tourmaline quartz
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline crystal, thin section
Black tourmaline, SEM
Tourmaline crystals in quartz
Tourmaline in quartz
Elbaite crystal, variety Tourmaline
Tourmaline gemstones in quartz
Indicolite tourmaline faceted stone
Watermelon tourmaline crystalline stone
Schorl tourmaline crystal stone
Tourmaline crystal specimen
Tourmaline crystal specimens
Tourmaline in gneiss rock
Blue tourmaline crystals
Elbaite mineral (tourmaline)
Two-mica granite
Quartz and green tourmaline crystals
Tourmaline embedded in feldspar rock
紅電気石
Elbaite on albite and quartz
Schorl and quartz crystals in groundmass
Lepidolite, Newry, Maine, USA
Lepidolite
Cut Watermelon Tourmaline gemstone
Yellow-green Tourmaline rough
Trillion cut tourmaline gemstone
Hawk's Eye quartz stone
Elbaite mineral
Dravite mineral
Mylonite, light micrograph
Granitic pegmatite
Cut green Paraiba Tourmaline gemstone
Muscovite Star Mica
Rubellite
Tourmaline in pegmatite host rock
Tourmaline schorl specimen
Granite
Lepidolite in pegmatitic groundmass
Garnet mica schist thin cut, polarised light micrograph
Opal specimen
Muscovite Mica
Rubellite crystals
Luxulyanite, thin section, LM
Aggregate of muscovite crystals
Mica inclusion
Muscovite Mica, Ontario, Canada
Mica schist folds, light micrograph
Orthogneiss, light micrograph
Biotite, Tyringham, Massachusetts, USA
Opal gemstones
Blue opal gemstones
Opal specimens
Single piece of blue opal
Opal mineral stone
Opal rock
Black opal gemstone
Tourmaline on quartz
Tourmaline cross section
Cut green Tourmaline gemstone
Ancient Roman columns
Tourmaline unworked stones
Aquamarine in muscovite matrix
Aquamarine in muscovite matrix, close
Biotite
Opalised fossil
Emeralds
Aquamarine crystals
Amphibolite, light micrograph
Limburgite
Obsidian mineral stone
Mineral properties, 18th century
石板にシルクを三角に折りアクセサリーを配置
Polarized light experiments, 1847
Sample of muscovite
Banded gneiss
Muscovite, light micrograph
Quartz Diorite, LM of thin section
Mica in quartz, light micrograph
Opal gemstone
電気石
Opal
Opal gem necklace
Opal in its host rock
Boulder opal formation
Opal gem and rock
Opal specimen and cut stone
Fire opal
'Black' opal cabochon specimen
Opal surface
Opal on bedrock
Ironstone matrix with potch opal
Potch opal with smooth and rough surface
Mineral samples
Fire Opal
Garnet
Peridotite
Garnet in peridotite
Mahogany Obsidian, Oregon, USA
Obsidian
Polished specimen of muscovite
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)
Quartz vein in schist
オパール
Snowflake obsidian
Fire opal birthstone
Cut Fire Opal gemstone
Migmatite, light micrograph
Migmatite