Chert
Microcrystalline Quartz (SiO2)
sedimentary
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
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Chert (Flinty variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Turquoise
Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
gemstone
Blue Lace Agate
Chalcedony (SiO2) with trace inclusions
mineral
Flint
Silicon Dioxide (SiO2) - Chert variety
sedimentary
Malachite
Malachite (Cu2CO3(OH)2)
mineral
Basalt
Basalt
Igneous
Seven Chakra Bonded Stone
Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz
metamorphic
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Sandstone Concretion
Sedimentary concretion
Sedimentary
Tumbled blue-green stone, likely chrysocolla or dyed chalcedony
Probable chrysocolla (hydrated copper aluminosilicate; variable composition), though appearance could also represent dyed chalcedony
mineral
Coquina
Bioclastic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Chert / Flint
Chert (varieties include Flint)
Sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Porcelain (Stoneware Ceramic)
Mullite / Silica-glass composite (Al6Si2O13)
metamorphic (man-made)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Pearl (Biogenic Mineraloid)
Calcium carbonate (CaCO3) primarily as Aragonite
mineral
Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
sedimentary
Basalt
Basalt
igneous
Marble
Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)
metamorphic
Pearl
Biogenic CaCO3 (Aragonite and Calcite)
mineral
Turquoise
Turquoise, CuAl6(PO4)4(OH)8·4H2O
mineral
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Crushed Limestone
Calcium Carbonate (CaCO3)
Sedimentary
Obsidian
Volcanic Glass (SiO2)
igneous
Green Aventurine
Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)
metamorphic
Diamond
Carbon (C)
mineral
Quartz Pebble (Beach Chalcedony)
Silicon Dioxide (SiO2)
mineral
Diamond
Cubic carbon (C)
mineral
Coquina Limestone
Coquina (Biogenic Limestone)
sedimentary
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Tumbled brown chalcedony (likely jasper or agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining
mineral
Diamond
Carbon (C)
mineral
Rutilated Quartz
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
mineral
Diamond
Diamond (pure carbon C)
mineral