Chert (Black Flint)
Silicon Dioxide (SiO2)
Category
Browse synthetic (man made material mimicking natural stone) specimens identified by the Rock Identifier community.
Chert (Black Flint)
Silicon Dioxide (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)
Diamond
Cubic carbon (C)
Chert (Flint / Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Coquina
Coquina (Biogenic Limestone / CaCO3)
Sandstone
Arenite (specifically sublithic or quartz arenite)
Diorite
Intermediate plutonic igneous rock
Red Sandstone
Quartz Arenite (iron-stained) / SiO2
Fossilized Coral (Coquina/Limestone)
Cnidaria Anthozoa (Fossilized)
Sandstone
Sedimentary Rock (Quartz Arenite)
Sandstone
Arenite (primarily SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Granite
Intrusive Igneous Rock
Staurolite (Fairy Stone)
Staurolite (Fe2+2Al9Si4O23(OH))
Chert (Flint)
SiO2 (Microcrystalline Quartz)
Sandstone
Arenite (primarily Quartz Arenite)
Chert (Green Chert or Jasper)
Microcrystalline Quartz (SiO2)
Diamond (Faceted)
Carbon (C)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Blue Slag Glass
Ferro-silicate glass (Slag)
Chert (Nodule/Pebble)
Chert (Silicon Dioxide, SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2)
Rough Diamond
Diamond (pure Carbon, C)
Unakite
Altered Granite (Epidotized Granite)
Blue chalcedony (likely dyed or polished)
Chalcedony, microcrystalline quartz (SiO₂)
Sandstone (Pebble)
Arenite (primarily SiO2)
Basalt River Stone
Basalt
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone
Clastic Sedimentary Rock
Unidentified polished stone fragments
Indeterminate; likely mixed lapidary specimens, possibly jasper, agate, or quartz-bearing rock
Flint (or Chert with cortex)
Silicon dioxide (SiO2)
Chert (Flint)
Chert (Cryptocrystalline Silica, SiO2)
Sandstone (likely Ferruginous)
Sandstone (SiO2 with iron oxides)
Chert (Flint)
Silicon Dioxide (SiO2)
Opal (in Jewelry Setting)
Hydrated Silicon Dioxide (SiO2·nH2O)
Smoky Quartz (Faceted)
Silicon Dioxide (SiO2)
Textile (Upholstery Fabric)
Woven Polyethylene/Polyester or Cotton Blend
Chert (often called Flint or Agate nodule)
Cryptocrystalline Quartz (SiO2)
Diorite
Diorite