Petrified Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
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.
Learn about Man Made Glass (Often Grouped With Minerals In Lapidary) in the encyclopedia
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Sunstone
Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)
mineral
Fossilized Coral (Petoskey Stone or Rugose Coral)
Antophyllum (Hexagonaria) or Scleractinia (CaCO3)
sedimentary
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Tumbled quartz (likely milky quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Iron-Stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 with Fe2O3)
mineral
Granite / Quartz Vein Rock
Granitoid with Quartz (SiO2)
igneous
Azurite and Malachite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
mineral
Quartz with Celadonite Inclusion
Silicon Dioxide (SiO2) with green clay mineral inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (likely Chalcedony or Chert)
Silicon Dioxide (SiO2)
mineral
Jasper in Basalt Matrix
Silicon Dioxide (SiO2) with impurities; Chalcedony
sedimentary (secondary mineral) within igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite River Rock with Dendrites
Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions
metamorphic
Chrysocolla on Matrix
Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)
mineral
Ferruginous Sandstone (Ironstone Nodules)
Ferruginous Sandstone with Limonite/Goethite coating (Fe2O3·H2O)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Riverstone (Sandstone Pebble)
Arenite (SiO2 with various lithic fragments)
sedimentary
Agated Chert
Microcrystalline Quartz (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Chert (Flint) with Limestone Coating
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) cortex
sedimentary
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Ironstone Concretion (Limonite/Goethite)
Iron-rich sedimentary rock (FeOx)
sedimentary
Copper Ore (with Malachite and Azurite)
Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)
mineral
Sandstone (Pebble)
Arenite
sedimentary
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Quartz River Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartz Geode Fragment with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Dragon Stone (Dragon Blood Jasper)
Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Granodiorite (or Granite) Pebble
Phaneritic Felsic Igneous Pebble
igneous