Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Category
Browse synthetic glass (often categorized as a simulated mineral) specimens identified by the Rock Identifier community.
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Chert (and Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartzite
Quartzite (chiefly SiO2)
Quartzite
Quartzite (principally SiO2)
Quartzite River Pebbles
Quartzite (primarily SiO2)
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
River Quartzite (or Quartz Cobble)
Quartzite (primarily Silicon Dioxide - SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)
Silicon Dioxide (SiO2)
Jasper (Iron-stained Chalcedony)
SiO2 with Fe2O3 (Iron Oxide) impurities
Green Fluorite
Calcium Fluoride (CaF2)
Quartzite (River Pebble)
Metamorphic rock consisting primarily of Quartz (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (predominantly SiO2)
Quartzite pebble
Metamorphic Quartz (SiO2)
Quartzite
Quartzite (primarily SiO2)
Red Quartzite
Quartzite (primarily SiO2)
Ferruginous Quartzite (Chert)
Quartzite with Iron inclusions (SiO2 + Fe2O3)
Quartzite
Metamorphosed Sandstone (SiO2 - Silicon Dioxide)
Quartzite
Quartzite (SiO2)
Chert (specifically Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Red Jasper
Jasper (a variety of Quartz, SiO2)
Sea Glass (Uranium/Vaseline Glass variant)
Silicon Dioxide (SiO2) with trace Uranium Oxide (U3O8)
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
Granite with Epidote
Granite, containing quartz, feldspar, and epidote
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)
Quartz (in a rock matrix)
Quartz (SiO2)
Amethyst Geode/Cluster
Quartz (SiO2) - variety Amethyst
Amber (Black)
Amber (succinite, retinite, etc., specifically, heavily included/dark varieties)
Staurolite
Staurolite (Fe2+2Al9Si4O23(OH))
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)