Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
mineral
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Agate (Puddingstone style)
Silicon Dioxide (SiO2) with impurities
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Dendritic Agate (Tumbled)
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
mineral
Chert (varietal known as Jasper or Flint)
Silicon Dioxide (SiO2)
Sedimentary Rock
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite impurities
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz with Pyrite
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Lodolite (Garden Quartz)
Silicon Dioxide (SiO2) with inclusions (Chlorite, Hematite, etc.)
mineral
Picture Jasper
SiO2
mineral
Septarian Nodule
Septarian concretion (Complex mixture of Siderite, Calcite, and Aragonite)
sedimentary
Rose Quartz
Rose Quartz (SiO2)
Mineral
Fluorite (often referred to as Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Crazy Lace Agate
Agate (Chalcedony - SiO2)
Mineral
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2
mineral
Jasper
Jasper (SiO2)
sedimentary
Amber and Citrine Quartz
Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)
mineral
Turquoise
Hydrous phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)
mineral
Obsidian
Volcanic Glass (SiO2)
igneous
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Chert (Pebble)
Silicon Dioxide (SiO2)
sedimentary
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sedimentary
Quartz Geode
Silicon Dioxide (SiO2) in Host Rock
sedimentary
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Mineral/Semiprecious Gemstone (variety of Quartz)
Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Milky Quartz Pebble with Chert
Silicon Dioxide (SiO2)
mineral
Chert (variant Flint/Novaculite)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Fluorite (Rainbow/Purple Fluorite)
Calcium Fluoride (CaF2)
mineral
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Dragon Blood Jasper
Epidote with Red Jasper (SiO2 + Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Agate (Turtle Carving)
Agate (Cryptocrystalline variety of Silica, SiO2)
mineral
Yellow Quartz (Citrinated Quartz)
Silicon Dioxide (SiO2)
mineral
Agate (Geode nodule)
Cryptocrystalline Quartz (SiO2)
mineral