Picture Jasper
SiO2, Microcrystalline Quartz
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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Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Porphyritic Igneous Rock / Granite or Rhyolite Porphyry
Porphyritic intrusive/extrusive igneous rock
igneous
Greenstone
Greenschist / Greenstone (Chlorite-Epidote facies)
metamorphic
Botryoidal Goethite
Goethite (α-Fe3+O(OH))
mineral
Dragon Blood Jasper
Epidote with Red Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz / Agate Nodule
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz cluster, possibly druzy quartz on matrix
Quartz (SiO₂), likely microcrystalline to coarse crystalline; associated matrix uncertain
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Jasper (Cryptocrystalline Quartz; SiO2)
sedimentary
Jasper or Red Quartzite
SiO2 (Silicon Dioxide with iron oxide impurities)
sedimentary or metamorphic
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Pegmatite (Granitic Pegmatite with Quartz, Mica, and Tourmaline/Biotite)
Pegmatite
igneous
Sandstone (Ferruginous)
Arenite with Iron oxide staining (SiO2 with Fe2O3)
sedimentary
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Snowflake Obsidian
Spherulitic Obsidian (Volcanic Glass with Cristobalite inclusions)
igneous
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
mineral
Quartz Pebble (possibly Chalcedony or Chert)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary/mineral
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Chalcedony / Agate with Botryoidal Quartz
Silicon Dioxide (SiO2)
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing mica)
mineral
Greenstone
Greenschist facies metabasite
metamorphic
Agate (or Chalcedony pebble)
Silicon Dioxide (SiO2)
mineral
Greenstone / Serpentinite
Serpentinite (composed largely of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Brecciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Petrified Wood
Silicon Dioxide (SiO2) permineralized organic matter
sedimentary