Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
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.
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Milky quartz pebble
Quartz (silicon dioxide, SiO₂)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rhodonite
Rhodonite (Mn2+SiO3)
mineral
Purpurite
Manganese Iron Phosphate, Mn3+(PO4)
mineral
Milky Quartz (Water-Worn Pebble)
Silicon Dioxide (SiO2)
mineral
Diamond (in jewelry setting)
Adamantine Carbon (C)
mineral
Milky quartz
Quartz (SiO₂), commonly massive or vein quartz
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Likely polished garnet fragment
Garnet group, possibly almandine (Fe₃Al₂Si₃O₁₂)
gemstone
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Agate Bookend / Quartz Geode
Silicon Dioxide (SiO2)
mineral
Garnet
Group of silicate minerals (e.g., Almandine: Fe3Al2(SiO4)3)
gemstone
Quartz with Iron Staining
Crystalline Silicon Dioxide (SiO2)
mineral
Greenstone
Metabasalt
metamorphic
Jasper
Silicon dioxide (Microcrystalline quartz, SiO2)
mineral
Septarian Nodule (Dragon Stone)
Carbonate concretion (Calcite and Aragonite in Limestone/Clay)
sedimentary
Fossil Coral
Scleractinia or Anthozoa (Fossilized)
fossil
Geode (Chert/Quartz Nodule)
Silicon Dioxide (SiO2)
sedimentary
Serpentine (Serpentinite)
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)
metamorphic
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Jasper and Quartz Breccia
Silicified breccia (SiO2)
sedimentary
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Limonite Nodule
FeO(OH)·nH2O (Hydrated iron oxide-hydroxide)
mineral
Chert (Jasper/Chaldcedony)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Pink/Rose Quartz or Quartz Crystal)
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Lepidolite Pebble
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Chert (Black Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Serpentinite
Serpentinite (composed primarily of mineral group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
metamorphic
Serpentinite (Serpentine Rock)
Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.
Metamorphic Rock
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Carnelian Agate / Iron-Stained Quartz
SiO2
Mineral
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Greenstone / Metagraywacke
Metamorphosed basaltic or sedimentary rock (Complex Silicate)
metamorphic
Chert
Microcrystalline Quartz (SiO2)
sedimentary