Strawberry Quartz (Hematoid Quartz)
Silicon Dioxide with Hematite/Goethite inclusions (SiO2 + Fe2O3)
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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Quartz with Hematite Staining
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Yellow Quartz or Citrine Geode/Cluster
Silicon Dioxide (SiO2)
mineral
Jasper (Banded Argillite/Chert mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Mixed Mineral Specimens
Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)
mineral
White Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
mineral
Serpentine
Serpentine group minerals (e.g., Antigorite, Chrysotile, Lizardite). Chemical formula: (Mg, Fe)₃Si₂O₅(OH)₄
Mineral, often found as a rock (metamorphic)
Mahogany Obsidian
Volcanic Glass with Hematite inclusions
igneous
Quartz Pebble (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Polished red jasper beads
Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (with Epidote and Feldspar/Zeolite infill)
igneous
Band Agate / Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Tumbled chalcedony or quartz-rich stone
Microcrystalline quartz, SiO₂; possibly pale chert or chalcedony
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Greenstone
Greenschist / Greenstone (containing Chlorite, Epidote, Actinolite)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Rough Quartz (Grey-Green)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
mineral
Chert (and/or River Pebble)
Microcrystalline quartz (SiO2)
sedimentary
Limonite-stained Quartz
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O) coatings
mineral
Amethyst (Geode)
Silicon Dioxide with Iron impurities (SiO2)
mineral
Green Quartzite
Quartzite (primarily SiO2 with inclusions)
metamorphic
Tree Agate
Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions
sedimentary
Lepidolite
Lepidolite - K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
igneous
Quartzite with Mica
Metamorphic Quartzite (SiO2 + Mica phyllosilicates)
metamorphic
Banded Agate (specifically Lake Superior Agate style)
Agate (Cryptocrystalline Quartz), SiO2
mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)
sedimentary
Banded Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Tumbled Serpentinite and Rose Quartz
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4 and Quartz (SiO2)
mineral
Granite
Phaneritic Plutonic Rock (High Silica content)
igneous
Dragon Blood Jasper
Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic