Polished blue stone, likely sodalite or dyed agate
Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing
Category
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Polished blue stone, likely sodalite or dyed agate
Sodalite: Na₈(Al₆Si₆O₂₄)Cl₂; exact identification requires testing
Raw Diamond
Carbon (C)
Diamond
Diamond (pure Carbon, C)
Slate
Metamorphic Pelitic Rock
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
Coquina
Bioclastic Limestone
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Diamond (in jewelry setting)
Carbon (C)
Chert
Silicon dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Blue Goldstone
Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)
Pearl (nacre)
Calcium Carbonate (mostly CaCO3 as Aragonite) and Conchiolin
Diamond
Carbon (C)
Turquoise bead bracelet
Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O
Flint
Silicon dioxide (SiO2)
Red Sandstone
Arenite (Fe2O3 enriched)
Tektite
Natural impact glass
Sandstone
Arenite
Chert (White Chert/Flint)
Microcrystalline Quartz (SiO2)
Chert (variations include Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sunstone (Aventurine Feldspar)
(Ca,Na)((Al,Si)2Si2O8) with inclusions of Cu or Fe2O3
Iron-stained quartz-rich rock, possibly jasper or chert
Microcrystalline quartz (SiO₂) with iron oxides/hydroxides
Diamond
Native Carbon (C)
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
Graphite
Graphite (Carbon, C)
Terracotta (Man-made ceramic brick fragment)
Baked clay / High-iron ceramic (Silicate-based ceramic)
Sandstone
Arenite (SiO2 composition dominant)
Diamond
Diamond (pure Carbon, C)
Granodiorite / Granite (Weathered)
Granodiorite
Coquina
Bioclastic Limestone
Slate
Metamorphic Pelitic Rock
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert or Jasper
Microcrystalline Quartz (SiO2)
Sandstone (Quartz Arenite)
Sandstone (dominated by SiO2 quartz grains)
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
Sandstone
Arenite (composed primarily of SiO2)