Smoky Quartz
Smoky Quartz (SiO2)
mineral
Category
Man Made Byproduct (Non Geological)
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Fossilized Shark Tooth (Eroded)
Carcharodon sp. or Otodus sp. fragment (likely)
fossil
Abbey Bominable (Monster High character)
Anthropomorphic Yeti / Digital Animation
not a rock (animated character)
Diamond (Faceted)
Carbon (C)
gemstone
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
Igneous
Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Tumbled brown chalcedony (likely jasper or agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Quartzite
Quartzite (Metamorphosed Sandstone)
metamorphic
Diamond in Kimberlite
Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)
igneous
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
not a rock (Man-made industrial metal)
Fossil shell fragment (likely brachiopod or bivalve)
Indeterminate fossilized carbonate shell; likely Brachiopoda or Bivalvia
fossil
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Goldstone and pink quartz bead strands
Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible
mineral
Aragonite (specifically Mexican Marbled Onyx)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
igneous
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Granite
Granite (a plutonic rock)
Igneous
Chert
Microcrystalline quartz (SiO2)
sedimentary
Pearl
Aragonite (CaCO3) with Conchiolin
mineral
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Red gemstone ring, likely garnet or synthetic ruby
Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish
gemstone
Slate
Metamorphic Pelitic Rock
metamorphic
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Tektite (Indochinite)
Impact Glass (SiO2 + Al2O3)
mineraloid
Diabase (Greenstone)
Diabase (Dolerite)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
sedimentary
Chert
Microcrystalline quartz (SiO2)
sedimentary
Dolerite (Diabase)
Dolerite / Diabase
igneous
Granite
Granite (Silicic Intrusive Igneous Rock)
Igneous
Red Sandstone
Quartz Arenite (iron-stained) / SiO2
sedimentary
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
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)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Diamond (in a jewelry setting)
Cubic Carbon (C)
mineral
Blue-green chrysocolla rough specimen
Chrysocolla, hydrated copper aluminosilicate; commonly associated with malachite, quartz, and limonite
mineral