Granite
Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)
igneous
Category
Carved Stone
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Unakite
Epidotized Granite
metamorphic
Alabaster
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
sedimentary
Chalcedony
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Libyan Desert Glass
Natural Silica Glass (SiO2 with minor iron and titanium)
mineraloid
Pink Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Tiger's Eye
SiO2 (Quartz with inclusion of iron oxides)
mineral
Nuummite
Nuummite (intergrowth of orthoamphiboles Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2)
Sedimentary Rock
Carnelian
Silicon dioxide (SiO2) - variety of Chalcedony
mineral
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
mineral
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)
igneous
Sphalerite in Chalcedony (Crescent Carving)
Zinc Sulfide (ZnS) with Silicon Dioxide (SiO2)
mineral
Obsidian (Polished Point/Wand)
Volcanic Glass (SiO2 with impurities)
igneous
Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
Mineral / Sedimentary Rock
Agate Geode
Microcrystalline Quartz (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Pink Thulite (in Pumice-like texture)
Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
metamorphic
Bloodstone (Heliotrope)
Chalcedony (cryptocrystalline Quartz, SiO2) with inclusions of Iron Oxide/Hematite
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Red Sandstone
Clastic Sedimentary Mineraloid (predominantly Quartz grains with Iron Oxide cement)
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Pink Granite
Phaneritic Acidic Plutonic Rock (primarily K-feldspar, quartz, and plagioclase)
Igneous
Obsidian
Volcanic Glass (Primary component: SiO2)
igneous
Clear Quartz Moon Pendant
Silicon Dioxide (SiO2)
gemstone
Fluorite (Green)
Fluorite (Calcium Fluoride, CaF2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Trilobite Fossil (Flexicalymene)
Flexicalymene ouzregui
sedimentary
Banded Calcite (often sold as Onyx Marble)
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Carnelian (Banded Agate)
Carnelian Chalcedony (SiO2)
mineral