Chert (also known as Flint or Common Chalcedony)
Cryptocrystalline Silica (SiO2)
sedimentary
Category
Synthetic Glass (Often Categorized As A Simulated Mineral)
Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.
Learn about Synthetic Glass (Often Categorized As A Simulated Mineral) in the encyclopedia
View all →
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (mostly SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Mineral
Citrine (Heat-treated or Natural Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Tumbled Amethyst
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Crystal Cluster)
Silicon Dioxide (SiO2)
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)
Mineral
Chert Nodule (Flint)
Silicon Dioxide (SiO2)
sedimentary
Rough Diamond / Clear Quartz
C (Carbon) or SiO2 (Silicon Dioxide)
mineral
Granite (specifically the Ubatuba variety)
Phaneritic Igneous Rock (Granodiorite/Monzogranite)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Green Aventurine
Aventurine (a variety of Quartz, SiO2 with fuchsite inclusions)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Quartz with Mica (Gneissic or Pegmatitic origin)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(F,OH)2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Porous Quartzite
Metamorphosed Quartz-rich Sandstone (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Rose Quartz with Schist Matrix
Silicon Dioxide (SiO2) with Mica-Schist
mineral
Quartzite with Iron Inclusions
Metamorphosed Quartz-rich Rock (SiO2 with Fe2O3)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Blue-green fluorite (likely tumbled/polished)
Fluorite, calcium fluoride (CaF₂)
mineral
Red Aventurine
Quartz containing Hematite or Goethite (SiO2)
mineral
Sandstone (specifically Red Sandstone)
Arenite (SiO2 with Iron Oxide)
sedimentary
Sandstone (Quartzite Pebble)
Arenite / Metamorphosed Sandstone (SiO2)
sedimentary
Sandstone (with Possible Iron Staining/Crust)
Arenite (SiO2 based)
sedimentary
Quartz Pebble (with Hematite Inclusions)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based with quartz grains)
sedimentary
Jasper and Quartz Breccia
Silica breccia (SiO2)
sedimentary