Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)
Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Iron Slag
Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)
Anthropogenic (Man-made industrial byproduct)
Sapphire
Corundum (Al2O3)
mineral
Amazonite (Amazon Stone)
Tectosilicate Microcline (KAlSi3O8)
mineral
Sunstone
Plagioclase feldspar (with Copper or Hematite inclusions)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Schist
Mica Schist (KAl2(AlSi3O10)(OH)2)
metamorphic
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Almandine Garnet & Tumbled Citrine Quartz
Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Smoky Quartz (Vein Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss (specifically a granitic gneiss cobble)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Tumbled Moonstone and Amazonite Chips
Orthoclase (KAlSi3O8) and Microcline (KAlSi3O8) of the Feldspar Group
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Basalt
Extrusive mafic igneous rock
igneous
Chert (Iron-stained)
Chert (Cryptocrystalline Silica, SiO2)
sedimentary
Vesicular Basalt (Scoria)
Vesicular Basalt
igneous
Vesicular Basalt with Xenocrysts
Mafic Igneous Plutonic/Extrusive Complex
igneous
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
South Korean 100 Won Coin (Cupronickel)
Cupronickel Alloy (75% Cu, 25% Ni)
mineral-based alloy (anthropogenic)
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Garnet Beads
Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)
Mineral
Black Tourmaline (Schorl)
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Basalt with Quartz/Zeolite Inclusions
Porphyritic Basalt (SiO2 with Aluminosilicates)
igneous
Scoria (Red Lava Rock)
Scoria (Vesicular basaltic rock)
Igneous
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
Mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
K2 Jasper (K2 Granite)
Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)
igneous
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)
metamorphic
Ruby in Zoisite
Anyolite (Ruby in Zoisite)
metamorphic
Snowflake Obsidian
Volcanic glass with Cristobalite inclusions (70–75% SiO2)
igneous