Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Malachite
Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2)
Petrified Wood
Silicified wood (Quartz variant, SiO2)
Malachite
Malachite, Cu2(CO3)(OH)2
Banded Agate (specifically Sardonyx or Carnelian Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
Rose Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz with Mineral Inclusions
Silicon Dioxide (SiO2) with miscellaneous inclusions
Lepidolite on Pegmatite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Milky Quartz
Silicon Dioxide (SiO2)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
Quartz (Microcrystalline variety)
Silicon Dioxide (SiO2)
Diamond (in jewelry setting)
Adamantine Carbon (C)
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Red Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (specifically Brown Chert or Jasper)
Microcrystalline Quartz (SiO2)
Iron-stained Quartzite / Chert
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Chert (and Petrified Wood)
Silicon Dioxide (SiO2)
Turquoise and Hematite
Turquoise: CuAl6(PO4)4(OH)8·4H2O; Hematite: Fe2O3
Quartz in Matrix (possibly with Biotite or Hornblende)
Quartz (Silicon Dioxide, SiO2) in Granitic Matrix
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Jasper (Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Greenstone (Greenstone River Pebble)
Greenschist (metamorphosed mafic igneous rock)
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
Chert (Flint) Pebble
Microcrystalline Quartz (SiO2)
Quartzite with Iron Inclusions
Metamorphosed Quartz Sandstone (SiO2 with Fe2O3)
Banded Iron Formation (BIF)
Banded Iron Formation containing Hematite (Fe2O3) and Magnetite (Fe3O4)
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
Yellow Quartz (Citrine-colored Quartz Pebble)
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)