Red Jasper (Siltstone variant)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Category
Mineral (Variant Of Quartz)
Browse mineral (variant of quartz) specimens identified by the Rock Identifier community.
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Chert (variably Oolitic or Fossiliferous)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Greywacke variant)
Arenite
sedimentary
Mixed Gemstone Bracelet
Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)
Mineral/Rock assemblage
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chert (Iron-rich or Slate-like variant)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Jasper or Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Lake Superior Agate variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcedony (Agate/Carnelian variant)
Cryptocrystalline Silica (SiO2)
mineral
Sunstone (Orthoclase Feldspar variant)
Orthoclase (KAlSi3O8) with inclusions
mineral
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Common Opal variant)
Silicon dioxide (SiO2) with varying levels of hydration
mineral
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
sedimentary
Mixed Tumbled Gemstones and River Rocks
Mixed Decorative Stones (predominantly Silicon Dioxide - SiO2 variants)
Mixed (Igneous, Sedimentary, Metamorphic, and Minerals)
Limestone (Travertine/Tufa variant)
Calcium Carbonate (CaCO3)
sedimentary
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Aura Turquoise or Treated Turquoise Beads
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O) with metallic coating
gemstone
Chert (Jasper/Carnelian variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Common Opal/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Diamond
Diamond (Carbon, C)
mineral
Sandstone (Yellow/Siltstone variant)
Arenite (SiO2 primarily)
sedimentary
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Granite Cobble/Pebble
Granite
Igneous
Chert (specifically Flint or Common Opal variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Orbicular Jasper (Ocean Jasper or Poppy Jasper variant)
Silicon Dioxide (SiO2) with various inclusions
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Yellow or Ochre Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Light Grey / Flint variant)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
mineral
Granite (White Granite variant)
Phaneritic Plutonic Rock (High-silica Felsic)
igneous
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
sedimentary
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
mineral