Blue Kyanite
Kyanite (Al2SiO5)
mineral
Category
Sedimentary Like (Industrial Composite)
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
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Limestone (with possible Manganese oxide inclusions)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Agate (Common Chalcedony)
Silicon Dioxide (SiO2)
mineral
Raw Diamond
Carbon (C)
mineral
Peridot (Olivine)
Olivine, (Mg, Fe)2SiO4
mineral
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
mineral
Anthracite Coal
Anthracite
sedimentary
Ruby, Emerald, and Sapphire (Corundum and Beryl)
Corundum (Al2O3) and Beryl (Be3Al2Si6O18)
mineral
Quartz (Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Pumice
Pumice (Amorphous volcanic glass)
igneous
Agate (Dyed High-Grade Polished Slice)
Silicon dioxide (SiO2), Chalcedony crystal variety
mineral
Pegmatite
Igneous Pegmatite
igneous
Pegmatite
Granitic Pegmatite
igneous
Wavellite with Quartz
Al3(PO4)2(OH,F)3 & SiO2
mineral
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper-like)
SiO2 (Cryptocrystalline Quartz)
Sedimentary
Silicon (Industrial Grade)
Elemental Silicon (Si)
mineral
Rough Garnet in Matrix
Almandine Garnet (Fe3Al2Si3O12)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Silver Flakes in Glass
Silver (Ag)
mineral
Vesicular Basalt (Lava Rock)
Basalt
igneous
Chert (specifically Iron-stained River Cobble)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Chert Nodule/Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Quartz in Matrix
Silicon Dioxide (SiO2) in host rock matrix
mineral
Yellow Quartz (Citrine or Yellow Chalcedony)
Silicon Dioxide (SiO2)
mineral
Pegmatite
Igneous Pegmatite
igneous
Pegmatite (Granitic) with Tourmaline
Granitic Pegmatite (containing Schorl and Quartz)
igneous
Native Copper (in coinage alloy)
Copper (Cu)
mineral
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)
sedimentary
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Ironstone (Limonitic Shale)
Ferruginous Siltstone / Goethite-rich Sedimentary Rock
sedimentary
Fluorite, Sodalite, and Rose Quartz collection
Calcium Fluoride (CaF2), Sodium Aluminum Silicate with Chlorine (Na8(Al6Si6O24)Cl2), Silicon Dioxide (SiO2)
mineral
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
mineral
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3
mineral
Chert (Basanite / Flint)
Microcrystalline silica (SiO2)
sedimentary
Basalt
Basalt (extrusive igneous rock)
Igneous
Chert (Smooth River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
gemstone
Agate
Chalcedony (SiO2)
mineral
Graphite-veined Quartzite
Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)
metamorphic
Rough Diamond
Diamond (C)
mineral