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Abalone
Iridescent sea shell, lined with mother-of-pearl
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Agate
Banded chalcedony (microcrystalline quartz)
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Agoudal meteorite
✦ From spaceIron meteorite from Morocco
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Amazonite
Blue-green feldspar mineral
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Amber (Baltic amber)
Fossilized tree resin
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Amethyst
Purple quartz
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Ametrine
Quartz with zones of purple amethyst and golden citrine
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Ammonite
Fossil shell of an extinct sea creature
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Angelite
Pale blue anhydrite mineral
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Apatite
Calcium phosphate mineral
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Apophyllite
Silicate mineral that forms glassy crystals
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Aquamarine
Blue beryl
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Arfvedsonite
Sodium-rich amphibole mineral
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Arizona sunstone
Feldspar with a glittering sheen, from Arizona
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Arkansas carnelian
Orange-red chalcedony (microcrystalline quartz) from Arkansas
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Arkansas quartz
Quartz crystal from Arkansas
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Atlantisite
Trade name for serpentine with purple stichtite
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Auriferous chalcopyrite
Gold-bearing chalcopyrite from the Hidee Mine, Colorado
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Australian carnelian
Orange-red chalcedony (microcrystalline quartz) from Australia
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Australian hematite
Iron oxide mineral from Australia
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Australian sapphire
Sapphire (corundum) from Australia
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Azurite
Deep blue copper carbonate mineral
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Basalt
Volcanic rock
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Bismuth
Metallic element, usually lab-grown into rainbow, stair-step crystals
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Black calcite
Calcium carbonate mineral
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Black kyanite
Kyanite with dark inclusions, growing in fan-shaped blades
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Black moonstone
Dark feldspar with a soft, silvery sheen
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Black tourmaline
Black variety of tourmaline, also called schorl; mined by Brit in Pala, California
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Blue aragonite
Calcium carbonate mineral
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Blue aventurine
Quartz with sparkling blue mineral inclusions
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Blue calcite
Pale blue variety of calcite
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Blue kyanite
Bladed aluminum silicate mineral
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Blue quartz
Quartz from Nelson County, Virginia, tinted blue by tiny mineral inclusions
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Blue topaz
Blue topaz, usually treated to deepen the color
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Buddstone
Trade name for green verdite, a mica-rich rock from South Africa
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Calcite
Calcium carbonate mineral
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Campo del Cielo meteorite
✦ From spaceIron meteorite from Argentina
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Carnelian
Orange-red chalcedony (microcrystalline quartz)
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Cavansite
Vivid blue mineral, often in small rosettes
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Celestite
Pale blue strontium sulfate mineral
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Chalcedony
Microcrystalline quartz with a soft, waxy glow
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Chalcopyrite
Copper iron sulfide mineral from Whitehorse, Yukon, Canada
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Charoite
Purple, swirling silicate mineral from Siberia
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Chevron amethyst
Amethyst banded with white quartz in V-shaped layers
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Chrysocolla
Blue-green copper mineral
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Citrine
Yellow to orange quartz
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Clear quartz
Colorless quartz
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Copper
Native element
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Cuprite
Deep red copper oxide mineral
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Desert rose
Rose-shaped gypsum crystals formed with desert sand
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Drusy quartz
A sparkling coat of tiny quartz crystals
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Dumortierite
Blue aluminum borosilicate mineral
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Emerald
Green beryl
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Epidote
Green silicate mineral
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Fluorite
Calcium fluoride mineral
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Fuchsite
Green, chromium-rich variety of muscovite mica
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Gabbro
Dark, coarse-grained igneous rock that cooled slowly deep underground
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Galena
Lead sulfide mineral
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Galena with pyrite and quartz
Lead sulfide alongside pyrite and quartz crystals
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Garden quartz
Quartz with mineral inclusions that look like tiny landscapes; also called lodolite
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Garnet
Mineral group, often deep red
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Gibeon meteorite
✦ From spaceIron meteorite from Namibia
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Gold Basin meteorite
✦ From spaceStony meteorite from Arizona, USA
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Gold sheen obsidian
Volcanic glass with a golden sheen
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Golden Azeztulite
Trade name for a golden quartz
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Golden healer quartz
Trade name for quartz with a natural golden iron coating
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Golden rutilated quartz
Quartz with golden needles of rutile
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Green aventurine
Quartz with sparkling green mica inclusions
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Green calcite
Green variety of calcite
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Green tourmaline
Green variety of tourmaline; mined by Brit in Pala, California
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Hawk's eye
Quartz with silky blue-gray bands; tiger's eye's blue cousin
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Healerite
Trade name for light-green serpentine
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Hematite
Iron oxide mineral
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Herkimer diamond
Double-terminated quartz from Herkimer County, New York
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Hickoryite
Patterned, banded volcanic rock (rhyolite)
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Howlite
White borate mineral with gray veins
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Jade
Green nephrite jade from British Columbia, Canada
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K2 gneiss
Rock with blue azurite spots, from the K2 region of Pakistan
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Kambaba jasper
Rhyolitic volcanic rock of quartz, feldspar, aegirine and amphibole needles; sold as jasper
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Kammererite
Purple-red, chromium-rich variety of clinochlore
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Kauaʻi calcite
Calcium carbonate mineral from Kauaʻi
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Kunzite
Pink to lilac spodumene
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Labradorite
Feldspar mineral with a play of color
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Lapis lazuli
Deep blue rock made mostly of lazurite
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Larimar
Blue pectolite from the Dominican Republic
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Lava rock
Porous volcanic rock
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Leopard jasper
Spotted, orbicular rhyolite; sold as jasper
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Lepidolite
Lithium-rich mica; mined by Brit in Pala, California
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Mangano calcite
Pink calcite, colored by manganese
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Merlinite
Trade name for chalcedony with dark, fern-like mineral patterns
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Miriam stone
Fossil-rich sedimentary rock with natural, script-like patterns; also known as Calligraphy Stone
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Moldavite
✦ Cosmic impactNatural green glass formed when a meteorite hit Earth, found in Central Europe
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Montana agate
Banded chalcedony from Montana
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Moonstone
Feldspar mineral with a soft, glowing sheen
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Morganite
Pink variety of the mineral beryl; mined by Brit in Pala, California
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Moss agate
Chalcedony with green, moss-like mineral inclusions
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Mother-of-pearl
Iridescent inner layer of a shell
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Muonionalusta meteorite
✦ From spaceIron meteorite from northern Sweden
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Muscovite
Silvery mica that splits into thin, shimmering sheets; mined by Brit in Pala, California
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Nuummite
Ancient metamorphic rock from Greenland with iridescent flashes
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Obsidian
Volcanic glass
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Onyx
Banded chalcedony (microcrystalline quartz)
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Opal
Hydrated silica mineraloid
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Orange calcite
Orange variety of calcite
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Oregon sunstone
Feldspar with copper flecks, from Oregon
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Peach selenite
Peach-toned variety of gypsum
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Peacock kyanite
Kyanite blades in mixed shades of blue and green
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Peridot
Olive-green variety of the mineral olivine
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Picture jasper
Patterned stone with scenes that look like landscapes
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Pink amethyst
Pale pink to lavender quartz
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Pink halite
Natural rock salt (sodium chloride)
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Pink tourmaline
Pink variety of tourmaline; mined by Brit in Pala, California
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Pounamu
New Zealand greenstone, treasured by Māori
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Prehnite
Pale green silicate mineral
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Preseli bluestone
Spotted dolerite from the Preseli Hills of Wales, source of Stonehenge's bluestones
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Pyrite
Iron sulfide mineral, known as fool's gold
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Quartz
The crystal family behind amethyst, citrine and more
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Rainbow calcite
Calcium carbonate mineral in bands of color
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Rainbow fluorite
Fluorite banded in purple, green and blue
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Rainbow moonstone
White labradorite with a blue, rainbow-like sheen; sold as moonstone
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Rainbow obsidian
Volcanic glass with an iridescent sheen
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Rainbow topaz
Topaz with a metal coating (treated)
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Red aragonite
Calcium carbonate mineral
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Red jasper
Opaque red microcrystalline quartz
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Rhodochrosite
Pink manganese carbonate mineral, often banded
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Rhodonite
Pink manganese mineral with black veins
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Rhyolite
Fine-grained volcanic rock
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Rose quartz
Pink quartz
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Ruby in kyanite
Red ruby crystals set in blue kyanite
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Rutilated quartz
Quartz with needle-like rutile inclusions
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Sahara Desert meteorite
✦ From spaceMeteorite found in the Sahara, Morocco
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Sapphire
Corundum
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Sayh al Uhaymir meteorite
✦ From spaceMeteorite found in the desert of Oman
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Selenite
Clear variety of gypsum
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Septarian
Concretion with calcite-filled cracks
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Seraphinite
Trade name for green clinochlore with feathery, silvery patterns
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Serpentine
Green mineral group
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Shiva eye
Shell door of a sea snail
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Shungite
Carbon-rich rock from Karelia, Russia
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Sikhote-Alin meteorite
✦ From spaceIron meteorite that fell in Russia in 1947
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Silicon
Metallic-looking element refined from quartz; lab-made
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Smoky quartz
Brown to gray quartz
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Snowflake obsidian
Volcanic glass with white, snowflake-like patches
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Spiderweb jasper
Jasper with dark, web-like veins
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Spiderweb obsidian
Volcanic glass with web-like veining
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Spiny oyster turquoise
Spiny oyster shell blended with turquoise, usually reconstituted
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Spirit quartz
Quartz covered in tiny crystal points; also called cactus quartz
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Strawberry quartz
Quartz with red mineral inclusions
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Sugilite
Rare purple manganese-bearing silicate mineral
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Sulfur
Native element
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Super Seven
Trade name for quartz holding several minerals
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Tektite
✦ Cosmic impactNatural glass formed when a meteorite hit Earth
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Tiger's eye
Quartz with silky golden bands
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Topaz
Aluminum fluorosilicate mineral
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Tourmaline
Boron silicate mineral group
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Triphane
Pale yellow variety of spodumene, kunzite's mineral cousin; mined by Brit in Pala, California
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Ulexite
Borate mineral, known as TV stone
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Uvarovite garnet
Emerald-green chromium garnet
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Vaca Muerta meteorite
✦ From spaceStony-iron meteorite from Chile's Atacama Desert
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Vanadinite
Red-orange lead vanadate mineral
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Watermelon tourmaline
Tourmaline with a pink center and green rind
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Wulfenite
Orange lead molybdate mineral with thin, plate-like crystals
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Yellow aragonite
Calcium carbonate mineral
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Yooperlite
Trade name for a rock with sodalite that glows under UV light, from Michigan
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Zebra jasper
Black-and-white patterned stone
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Zircon
Zirconium silicate mineral