White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Industrial Byproduct (Anthropogenic Rock)
Browse industrial byproduct (anthropogenic rock) specimens identified by the Rock Identifier community.
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Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Diamond (or high-refractive faceted gemstone)
Carbon; C
mineral
Quartz River Pebble with Algae
Silicon Dioxide (SiO2) with organic biofilm
metamorphic or igneous
Tiger's Eye (variations include Blue or Hawk's Eye)
Silicon Dioxide with Crocidolite inclusions (SiO2)
Metamorphic mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Green Jasper
Silicon Dioxide (SiO2)
sedimentary
Shungite
Shungite (Non-crystalline carbon, C)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Schist (with Iron Oxide)
Mica Schist
metamorphic
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
mineral
Diamond (appearing in jewelry)
Diamond (pure Carbon, C)
mineral
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Pegmatite (with smoky quartz and tourmaline/biotite)
Pegmatitic Granite
igneous
Jasper
Silicon Dioxide (SiO2)
sedimentary
Gold-bearing Quartz
Auriferous Quartz (SiO2 with native Au)
mineral
Blue Sapphire (Raw/Tumbled Corundum)
Corundum (Aluminum Oxide, Al2O3 with Fe/Ti traces)
mineral
Fossiliferous Limestone Pebble
Calcium Carbonate (CaCO3) with Biogenic Inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Diamond (or Diamond Simulant like Cubic Zirconia)
Carbon (C) - if Diamond; Zirconium dioxide (ZrO2) - if Cubic Zirconia
mineral
Cubic Zirconia (CZ) in Gold-Plated Setting
Cubic Zirconium Dioxide (ZrO2)
mineral
Yellow Calcite (Banded Calcite)
Calcium Carbonate (CaCO3)
mineral
Yellow Quartz Pebble
SiO2 (Silicon Dioxide)
mineral
Diamond
C (Native Carbon)
mineral
Orange Calcite with Siderite/Iron Oxide Coating
Calcium Carbonate (CaCO3)
mineral
Chert (Jasper/Quartzite)
Microcrystalline Silicon Dioxide (SiO2)
sedimentary
Mica Schist (with Muscovite)
Muscovite/Quartz Schist (KAl2(AlSi3O10)(OH)2)
metamorphic
Chalcedony (Quartz)
Silicon Dioxide (SiO2)
mineral
Rough Diamond
Diamond (Native Element Carbon, C)
mineral
Quartzite with Feldspar and Mica (Granitic Gneiss Pebble)
Metamorphic Rock / Quartzite / Granitic Gneiss
metamorphic
Sandstone Pebble
Sandstone (Silicon dioxide-rich clastic sedimentary rock)
sedimentary
Quartzite Pebble (River Rock)
Metamorphic Quartzite (SiO2)
metamorphic
Vesicular Basalt (Scoria)
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Likely weathered gneiss
Foliated metamorphic rock, commonly quartz–feldspar–mica gneiss
metamorphic
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
sedimentary
Basalt (Porphyritic Basalt)
Extrusive Igneous Rock
igneous
Dalmatian Stone
Aplite (often incorrectly called Dalmatian Jasper)
igneous
Serpentine
Antigorite/Lizardite/Chrysotile group, Mg3Si2O5(OH)4
metamorphic