Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Category
Browse mineral simulant (synthetic glass) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Emerald (Faceted Gemstone)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (often called Jasper in this color variety)
Microcrystalline Quartz (SiO2)
Orange Quartzite / Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
White Quartz (Mushroom Carving)
Quartz (Silicon Dioxide - SiO2)
Quartz (Riverstone / Cobble)
Silicon Dioxide (SiO2)
Quartz (Milky or Cloudy variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz with Mica inclusion
Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions
Quartz Druzy on Agate (River Cobble)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Mahogany Obsidian
Volcanic glass (SiO2 + Fe2O3)
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Sandstone (Quartz Arenite)
Clastic Sedimentary Rock - Quartz Arenite
Banded Sandstone (Differential Weathering)
Clastic Sedimentary Rock (primarily SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz (Crystal Cluster)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
Jasper
Jasper (Cryptocrystalline Quartz, SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Milky/Opaque variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 based)
Clear Quartz
Silicon Dioxide (SiO2)
Marble (Calcitic)
Metamorphosed Limestone (CaCO3)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)