Select a mineral from the list to read about it.
Crystal Encyclopedia
Choose a letter, pick a stone from the list, and read about it: what it is made of, how hard it is, what it looks like, what it has traditionally been said to do, and how to look after it.
450 minerals
- Actinolite
- Adamite
- Ægirine
- Agatized Coral Fossil
- Agni Manitite
- Albite
- Allanite
- Amazonite
- Amber
- Amethyst
- Ametrine
- Ammolite
- Ammonite
- Amphibole Quartz
- Ancestralite
- Angelite
- Apache Tears
- Apophyllite
- Aqua Aura Quartz
- Aquamarine
- Aragonite
- Arfvedsonite
- Astrophyllite
- Atlantisite
- Augite
- Auralite 23
- Aurichalcite
- Azeztulite
- Azurite
- Azurmalachite
- Barite
- Basalt
- Bastnaesite
- Benitoite
- Bertrandite
- Biotite
- Bismuth
- Bixbite
- Black Banded Agate
- Black Garnet
- Black Jade
- Black Kyanite
- Black Moonstone
- Obsidian
- Black Quartz
- Black Tiger's Eye
- Black Tourmaline
- Black/Brown Opal
- Bloodstone
- Baltic Amber
- Blue and Golden Barite
- Blue and Gray Aventurine
- Blue Apatite
- Blue Calcite
- Blue Fluorite
- Blue Goldstone
- Blue Kyanite
- Blue Lace Agate
- Blue Onyx
- Blue Opal
- Blue or Purple Chalcedony
- Blue Rose Quartz
- Blue Sapphire
- Blue Tiger's Eye
- Blue Topaz
- Blue Tourmaline
- Boji Stones
- Bolivianite
- Bornite
- Brandberg Amethyst
- Brazilianite
- Bronzite
- Brookite
- Brown Banded Agate
- Brown Tourmaline
- Buddstone
- Bumblebee Jasper
- Bytownite
- Cacoxenite
- Calaverite
- Calcite Balls with Quartz and Actinolite
- Campo del Cielo
- Caribbean Calcite
- Carnelian
- Cassiterite
- Cataclosite Impact Stone
- Cavansite
- Celestite
- Cerussite
- Chalcanthite
- Chalcedony Rose
- Chalcopyrite
- Charoite
- Cherry Quartz
- Chiastolite
- Chlorite Quartz
- Chocolate Calcite
- Cholla de Veracruz Amethyst
- Chromite
- Chrysanthemum Stone
- Chrysoberyl
- Chrysocolla
- Chrysoprase
- Cinnabar
- Cinnabite
- Citrine
- Clear Fluorite
- Clear Quartz
- Clinothulite
- Cobalto Calcite
- Colombianite
- Conichalcite
- Copper
- Coprolite
- Cordierite
- Corundum
- Cradle of Humankind
- Crazy Lace Agate
- Cream Moonstone
- Creedite
- Cristobalite
- Crocidolite
- Cryolite
- Cummingtonite
- Cuprite
- Dalmatian Jasper
- Danburite
- Datolite
- Dendritic Agate
- Dendritic Opal
- Desert Rose
- Diaspore
- Dichroic Kyanite
- Diopside
- Dioptase
- Dolomite
- Double Terminated Quartz
- Dragon's Blood Jasper
- Dream Quartz
- Dumortierite
- Eclogite
- Elestial Citrine
- Emerald
- Enstatite
- Epidote
- Erythrite
- Euchroite
- Euclase
- Eudialyte
- Euxenite
- Faden Quartz
- Ferberite
- Ferruginous Quartz
- Fire Agate
- Fire and Ice Quartz
- Fire Opal
- Flame Jasper
- Flower Agate
- Flower of Life
- Fossil Sea Urchin
- Franckeite
- Frieselbenite
- Fuchsite
- Fulgurite
- Gabbro
- Galaxy Granite
- Galena
- Gibeon Iron Meteorite
- Glauconite
- Gobi Desert Stone
- Goethite
- Gold Sheen Obsidian
- Golden Apatite
- Golden Healer Quartz
- Golden Labradorite
- Goldstone
- Grape Agate
- Green Apatite
- Green Apophyllite
- Green Aventurine
- Green Calcite
- Green Fluorite
- Green Garnet
- Green Goldstone
- Green Heulandite
- Green Kyanite
- Green Moonstone
- Green Onyx
- Green Opal
- Green Tourmaline
- Gray Banded Agate
- Grossular Garnet
- Grunerite
- Gypsum
- Halite
- Hanksite
- Hapkeite
- Healerite
- Hedenbergite
- Heliodor
- Hematite
- Hematoid Quartz
- Hemimorphite
- Henbury Iron Meteorite
- Herderite
- Herkimer Diamond
- Heulandite
- Hibonite
- Hiddenite
- Honey Calcite
- Howlite
- Hubnerite
- Hyalite Opal
- Hydroxylapatite
- Hypersthene
- Icelandic Spar
- Idocrase
- Idrialite
- Ilmenite
- Impactite
- Imperial Topaz
- Infinite
- Iolite
- Iowaite
- Iris Agate
- Jade
- Jeremejevite
- Jet
- K2 (Azurite in Granite)
- Kamacite
- Kambaba Jasper
- Kammererite
- Kernite
- Kogarkoite
- Kolbeckite
- Kunzite
- Labradorite
- Lady Annabella Fluorite Twins
- Lapis Lazuli
- Larimar
- Larvikite
- Lavender Jade
- Lazulite
- Legrandite
- Lemon Chrysoprase
- Lemurian Seed Quartz
- Leopardskin Jasper
- Lepidolite
- Leucite
- Libyan Desert Glass
- Limonite
- Lionskin
- Lithium Quartz
- Lizardite
- Llanite
- Lodestone
- Lodolite
- Lushan Jade
- Luxullianite
- Madeira Citrine
- Magnesite
- Magnetite
- Mahogany Obsidian
- Malachite
- Malacolla
- Manganite
- Mangano Calcite
- Mango Quartz
- Marcasite
- Mariposite
- Mary Ellen Stromatolite
- Boulder Opal
- Megalodon Tooth Fossil
- Menilite
- Mesolite
- Microcline
- Millerite
- Mimetite
- Mohawkite
- Moldavite
- Monazite
- Mookaite
- Moolooite
- Moonstone (Gemstone)
- Moqui Marbles
- Morganite
- Moss Agate
- Muscovite Mica
- Natrolite
- Nepheline
- Nephrite Jade
- Nunderite
- Nuummite
- Ocean Jasper
- Okenite
- Onyx
- Opal Aura Quartz
- Opalite
- Orange Calcite
- Orange Kyanite
- Orca Agate
- Oregon Sunstone
- Orpiment
- Orthoceras Fossil
- Orthoclase
- Peach Banded Agate
- Peach Moonstone
- Peach Selenite
- Peridot
- Petalite
- Petrified Wood
- Petroleum Included Quartz
- Phantom Quartz
- Phenacite
- Picasso Jasper
- Picromerite
- Picture Jasper
- Pietersite
- Pink Amethyst
- Pink Fluorite
- Pink Opal
- Pink-Purple Banded Agate
- Pinolith
- Polychrome Jasper
- Prasiolite
- Prehnite
- Preseli Bluestone
- Pruskite
- Pseudo Tektites
- Psilomelane
- Purple Fluorite
- Purple Opal
- Purpurite
- Pyrite
- Pyritized Ammonite
- Pyrolusite
- Pyromorphite
- Quartz with Ajoite
- Rainbow Aura Quartz
- Rainbow Calcite
- Rainbow Fluorite
- Rainbow Moonstone
- Rainbow Obsidian
- Rainbow Topaz
- Rainforest Rhyolite
- Red and Orange Aventurine
- Red Calcite
- Red Garnet
- Red Jasper
- Red Spinel
- Red Tiger's Eye
- Rhodochrosite
- Rhodonite
- Rogerley Mine Fluorite
- Rose Quartz
- Rubellite
- Ruby
- Rutilated Quartz
- Saffordite
- Sardonyx
- Satin Spar
- Saturn Chalcedony
- Satyaloka Quartz
- Saussurite
- Scapolite
- Schalenblende
- Scheelite
- Scolecite
- Selenite
- Septarian
- Seraphinite
- Sericho Pallasite Meteorite
- Serpentine
- Seymchan Pallasite Meteorite
- Shangaan Smoky Amethyst
- Shattuckite
- Shattuckite & Galena
- Shiva Lingam
- Shungite
- Sikhote-Alin Iron Meteorite
- Silver Sheen Obsidian
- Silverleaf Jasper
- Skutterudite
- Smokey Quartz
- Snakeskin Agate
- Snowflake Obsidian
- Sodalite
- Spectrolite
- Specularite
- Spessartine Garnet
- Sphene
- Spirit Quartz
- Star Garnet
- Star Hollandite Quartz
- Starburst Jasper
- Staurolite
- Stibnite
- Stichtite
- Stilbite
- Strawberry Quartz
- Sugilite
- Sulfur
- Sulfur Quartz
- Sunset Sodalite
- Sunstone
- Sunstone with Iolite
- Super 7 Melody Stone
- Tanzanite
- Terahertz
- Tetraferrophlogapite
- Thailandite
- Thulite
- Tibetan Tektite
- Tiffany Stone
- Tiger Iron
- Tiger's Eye
- Titanite
- Topaz
- Tourmalated Quartz
- Tree Agate
- Trilobite
- Triphane
- Truffle Chalcedony
- Tschermigite
- Tunellite
- Turquoise
- Turritella Agate
- Ulexite
- Unakite Jasper
- Uvarovite Garnet
- Vanadinite
- Variscite
- Veracruz Amethyst
- Verdite
- Vesuvianite
- Vivianite
- Wardite
- Watermelon Tourmaline
- Wavellite
- Welo Opal
- Wulfenite
- Yellow Brucite
- Yellow Calcite
- Yellow Fluorite
- Yellow Garnet
- Yellow Jade
- YGX Fluorite
- Zebra Calcite
- Zebra Jasper
- Zincite
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