Mass of pyramid-shaped amethyst crystals
Single amethyst crystal, close up
Amethyst
Amethyst crystals
Amethyst crystals, light micrograph
Heat-treated amethyst
Amethyst geode
Amethyst geodes
Raw amethyst crystal
Prismatic amethyst crystal
Amethyst filled geode
Amethyst geode interior
Amethyst and chalcedony
Calcite on amethyst
Amethyst gemstones and crystal
Amethyst crystals, Guanajuato, Mexico
Amethyst gem
Amethyst crystals in an agate geode
Cursed amethyst
Quartz types
Amethyst gemstones
Oval amethyst
Amethyst, SEM
Oval cut amethyst
Round cut amethyst
Pear cut amethyst
Chevron Amethyst Crystal Gemstone
Agate in amethyst
Amethyst, a quartz crystal
Amethyst Crystal Healing Stone
Rutilated Amethyst Crystal Healing Stone
Amethyst Geode opened
Amethyst gemstone
Cross-section slice of Brazilian agate
Tool holding amethyst gemstone
Square cut purple Amethyst gemstone
Amethyst quartz birthstone
Round cut tanzanite
Amethyst druse (crystals in a rock cavity)
Sapphire crystals in rock groundmass
Rubies and sapphire
Turquoise embedded in iron oxide
Ruby
Ruby crystal and gems
Sapphire crystal
Ironstone matrix with potch opal
Schorl and quartz crystals in groundmass
Ruby crystals, SEM
Pyrolusite in quartz
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Citrine crystals
Fluorite crystals on quartz, close up
Cuprite crystals, close-up
Mass of prismatic aquamarine crystals
Tourmaline crystals in quartz
Banded Amethyst stone
Elbaite on albite and quartz
Quartz crystals
Amethyst crystal
Synthetic gemstones
Large ruby slice
Unpolished topaz crystals
Tweezers holding small purple diamond, close-up
Aquamarine crystals
Raw citrine crystal
Herkimer diamonds of quartz mineral
Tourmaline in quartz
Blue sapphire stone
Blue Sapphire uncut stone
Opal gem necklace
Jade stone
Garnet gemstone
Tourmaline quartz
Garnet crystals on schist
Almandine crystals in schist
Tourmaline crystals in quartzite
Amethyst stone
Quartz encrusted calcite crystals
Lazurite crystals in a matrix of calcite
Citrine
Ruby quartz
Spine crystals in quartz groundmass
Healing stones amethyst
Mixed-cut amethyst and diamond ring
Pyrite and quartz, crystalline
Quartz vein
Quartz crystal from Sentis, Switzerland.
Hawk's Eye quartz stone
Schorl tourmaline crystal stone
Almandine crystals
Round agate geode
Dyed agate slice
Almandine
Amethyst crystals, Kirlian photograph
Ruby in zoisite
Concentric banding in agate
Calcite crystal
Calcite
Aragonite crystals
Raw garnet crystal
Tourmaline crystal, thin section
Andradite crystals
Nephrite crystals
Tremolite crystals
Topaz crystals
Pyrargyrite crystals
Dendritic crystals in chalcedony
Quartz crystals, SEM
Smoky quartz crystals
Labradorite rock crystals
Uvarovite garnet crystals
Lapis lazuli crystals
Quartzite metamorphic rock
Rhyolitic geode