Sandstone
Arenite (SiO2 based)
sedimentary
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
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Sandstone
Clastic Sedimentary Rock
sedimentary
Diamond (in jewelry)
Cubic Carbon (C)
mineral
Tumbled yellow quartz (likely citrine or iron-stained quartz)
Quartz, SiO₂; yellow color from trace iron or irradiation/heat-related coloration
mineral
Diamond
Natural Diamond (Carbon, C)
gemstone
Native Copper Nugget
Native Copper (Cu)
mineral
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
mineral
Peridotite (with Olivine)
Peridotite (rich in Olivine, (Mg,Fe)2SiO4)
igneous
Rainbow aura quartz cluster
Quartz, silicon dioxide (SiO₂), artificially coated with a thin metallic film
mineral
Fluorite (often referred to as Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
mineral
Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Black Tourmaline in Quartz Matrix
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst (Rough Crystal)
Silicon Dioxide (SiO2) with iron impurities
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Schist (Micaceous Schist)
Micaceous schist (Mainly Muscovite/Biotite mixed with Quartz)
metamorphic
Quartzite with Quartz Veining
Quartzite (primarily SiO2)
metamorphic
Sulfur (in host rock)
Native Sulfur (S8)
mineral
Pumice
Pumice (Volcanic Rock)
igneous
Belemnoidea (Belemnite) Fossil
Belemnoidea (order), typically within the genus Belemnitida
fossil
Yellow Jasper
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary
Red Sandstone or Brick Fragment
Arenite (if sandstone)
sedimentary
Pegmatite (Granitic Pegmatite with Quartz, Feldspar, and Mica)
Granitic Pegmatite
igneous
Diamond (or Diamond Simulant)
Carbon (C) if diamond, various if simulant
gemstone
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Ruby (Raw Corundum)
Alumina (Al2O3) with Chromium traces
gemstone
Iron-stained Quartz (Gossan/Limonite-coated Quartz)
Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)
mineral
Beryl (Emerald Variety)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Olivine (Peridot)
Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Milky Quartz with Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Almandine Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Olivine (Peridotite)
Magnesium iron silicate ((Mg, Fe)2SiO4)
igneous
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Anthracite Coal
Anthracite (Carbon-based solid)
metamorphic
Ferruginous Quartz
Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)
mineral