Limestone with Chert Nodule
Carbonate rock (CaCO3) with Microcrystalline Silicon Dioxide (SiO2) inclusion
sedimentary
Category
Mineral (Man Made Aura Treatment)
Browse mineral (man made aura treatment) specimens identified by the Rock Identifier community.
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Dyed Agate (Tumbled)
Silicon Dioxide (Chalcedony variety, artificially dyed)
gemstone
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Man-made object (coin)
Himalayan Pink Salt
Halite (NaCl) with iron oxide inclusions
sedimentary
Ruby in Matrix
Corundum (Al2O3)
mineral
Honey Calcite
Calcite (Calcium Carbonate - CaCO3)
mineral
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Tumbled honey calcite
Calcite (CaCO₃), likely iron-stained variety
mineral
Fossil Sea Urchin (Echinoid)
Echinoidea fossil (often replaced by silica or calcite)
fossil
Diamond
Carbon (C)
mineral
Raw emerald-bearing beryl (probable)
Beryl, Be₃Al₂Si₆O₁₈; green color from trace chromium and/or vanadium
mineral
Sulfur
Native Sulfur (S8)
mineral
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
fossil
Fossilized echinoid (sea urchin), likely a flint/chalk-associated test
Echinoid fossil; likely a regular echinoid such as Echinocidaris or related taxon, composed mainly of recrystallized calcite (CaCO₃)
fossil
Orange Quartz with Hematite inclusions
Quartz (SiO2) with Hematite (Fe2O3) inclusions
Mineral
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
sedimentary
Rainbow chalcopyrite (“peacock ore”)
Chalcopyrite, CuFeS₂, commonly artificially tarnished or heat-treated
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Orgonite Pyramid (containing Amethyst and mixed minerals)
Silicon Dioxide (SiO2) in synthetic resin
gemstone
Druzy Quartz Geode (with Chalcedony)
Silicon Dioxide (SiO2)
mineral
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
man-made (synthetic rock)
Basalt
Basalt
Igneous
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
mineral (man-made composite)
Cardstock (Paper)
Cellulose (C6H10O5)n
sedimentary (man-made)
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
man-made glass
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Anthropogenic (Man-made)
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material
Diamond
Diamond (pure Carbon, C)
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
White calcite (likely tumbled calcite or marble fragment)
Calcite, calcium carbonate (CaCO₃); if the specimen is granular and rock-like, it may be marble, a calcite-rich metamorphic rock
mineral
Turquoise
Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
gemstone
Malachite
Malachite (Cu2CO3(OH)2)
mineral
Blue Lace Agate
Chalcedony (SiO2) with trace inclusions
mineral
Green calcite (likely)
Calcite — calcium carbonate, CaCO₃
mineral
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
Tiger Shark Fossil Tooth
Galeocerdo cuvier (fossilized)
sedimentary
Sandstone Concretion
Sedimentary concretion
Sedimentary
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Blue-green chrysocolla rough specimen
Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite
mineral