Single amethyst crystal, close up
Mass of pyramid-shaped amethyst crystals
Amethyst
Raw amethyst crystal
Prismatic amethyst crystal
Heat-treated amethyst
Amethyst crystals
Amethyst geode
Amethyst geodes
Amethyst filled geode
Amethyst geode interior
Amethyst crystals, light micrograph
Amethyst and chalcedony
Calcite on amethyst
Amethyst gemstones and crystal
Amethyst gem
Chevron Amethyst Crystal Gemstone
Amethyst, a quartz crystal
Cursed amethyst
Quartz types
Amethyst gemstones
Oval amethyst
Amethyst, SEM
Amethyst crystals, Guanajuato, Mexico
Oval cut amethyst
Round cut amethyst
Pear cut amethyst
Agate in amethyst
Amethyst crystals in an agate geode
Amethyst Crystal Healing Stone
Rutilated Amethyst Crystal Healing Stone
Amethyst Geode opened
Amethyst gemstone
Sapphire crystal
Tool holding amethyst gemstone
Ruby crystal and gems
Cross-section slice of Brazilian agate
Square cut purple Amethyst gemstone
Round cut tanzanite
Amethyst quartz birthstone
Rubies and sapphire
Ruby
Ironstone matrix with potch opal
Pyrolusite in quartz
Sapphire crystals in rock groundmass
Turquoise embedded in iron oxide
Raw citrine crystal
Banded Amethyst stone
Elbaite on albite and quartz
Schorl and quartz crystals in groundmass
Amethyst druse (crystals in a rock cavity)
Amethyst crystal
Quartz crystal from Sentis, Switzerland.
Ruby crystals, SEM
Schorl tourmaline crystal stone
アメジスト
Calcite crystal
Synthetic gemstones
Raw garnet crystal
Tourmaline crystal, thin section
Fluorite crystals on quartz, close up
Cuprite crystals, close-up
Citrine crystals
Herkimer diamonds of quartz mineral
Tourmaline crystals in quartz
Tourmaline in quartz
Blue sapphire stone
Blue Sapphire uncut stone
Opal gem necklace
Jade stone
Garnet gemstone
Tourmaline quartz
Emerald crystal, close up
Amethyst stone
Olivine peridot crystal, close up
Citrine
Topaz crystal in albite and microcline
Quartz vein
Quartz crystals
Hawk's Eye quartz stone
Large ruby slice
Tweezers holding small purple diamond, close-up
Round agate geode
Dyed agate slice
Concentric banding in agate
Calcite
Quartz crystal
Kyanite crystal
Unpolished topaz crystals
Microdiamond crystal
Tourmaline crystal
Garnet crystal and rock
Ruby quartz
Healing stones amethyst
Green fluorite cubic crystal twins
Mixed-cut amethyst and diamond ring
Dendritic precipitation in an agate
Raw tourmaline crystal
Tourmaline gemstones and crystal
Tourmaline crystal specimen
Tourmaline crystal specimens
Grossular dodecahedral crystal
Deformation of garnet crystal
Quartzite metamorphic rock
Rhyolitic geode
Geode, thin section micrograph
Turritella agate
Fuchsite mineral stone
Black tourmaline in mica schist
Garnet crystals on schist
Wollastonite with kolophonite
Opalised fossil
Almandine crystals in schist
Tourmaline crystals in quartzite
Emeralds
Peridotite
Garnet in peridotite
Aquamarine crystals
Lazurite crystals in a matrix of calcite
Mass of prismatic aquamarine crystals
Tourmaline Pegmatite
Pyrite and quartz, crystalline
Spine crystals in quartz groundmass
Quartz encrusted calcite crystals