Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
Mineral / Sedimentary Rock
Category
Mineral (Specifically A Cryptocrystalline Variety Of Quartz)
Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Brown Jasper
Silicon Dioxide (SiO2)
sedimentary
Zebra Jasper
Jasper (variety of Quartz/Chalcedony), SiO2
sedimentary
Snowflake Obsidian
Obsidian with Cristobalite inclusions
igneous
Quartz
SiO₂ (Silicon Dioxide)
Mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Puddingstone (Jasper-Conglomerate)
Conglomerate (Silicon Dioxide, SiO2 with impurities)
sedimentary
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Carnelian Agate
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
igneous, sedimentary, metamorphic, and mineral
Chert (or Flint)
Chert (SiO2)
sedimentary
Ruby (Rough/Raw)
Corundum (Al2O3:Cr)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Geode or Concretion
Silica-based Concretion / Quartz Geode
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (variations include Chalcedony and Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Rose Quartz
Silicon dioxide (SiO2)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Rose Quartz
Rose Quartz (SiO2 with traces of Titanium, Manganese, or Iron)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Rose Quartz
Rose Quartz (SiO2 with trace Ti, Fe, or Mn)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Halite
Halite (NaCl)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Quartz (Silicon Dioxide, SiO2) with trace inclusions of dumortierite
mineral
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron
mineral
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)
igneous
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral