Sandstone
Arenite (SiO2 primarily)
Category
Browse mineraloid like synthetic material specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 primarily)
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxides
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Jasper)
Cryptocrystalline quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Diamond
C (Carbon)
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
Chert (and Petrified Wood)
Silicon Dioxide (SiO2)
Chert (varietal Flint)
Chert (SiO2)
Scoria
Scoria (Vesicular Basalt/Andesite)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide Fe2O3 cement)
Sandstone
Arenite (SiO2 based)
Amber
Succiniferous organic material (Succinite)
Pearl (Cultured or Natural)
Aragonite (CaCO3) with Conchiolin
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Amber
Succinite
Jade (likely Jadeite or Nephrite)
Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
Amber
Succinite (with formula approximately C10H16O)
Amber
Succinite (specifically for Baltic amber); Complex mixture of organic compounds (C10H16O)
Amber
Succinite (a Fossilized Tree Resin); Chemical formula is approximately C10H16O
Pearl (nacre)
Calcium Carbonate (mostly CaCO3 as Aragonite) and Conchiolin
Libyan Desert Glass
Tektite (high-silica impact glass), SiO2 + tracing minerals
Pearl (Imitation or Cultured)
Calcium Carbonate (Aragonite/Calcite) - CaCO3
Limestone with Fossil inclusions
Fossiliferous Limestone (CaCO3)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (River Pebble)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Yellow Chert
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Jasper (Multi-color Chert)
Silicon Dioxide (SiO2) with impurities
Chert (Flint/Jasper)
Silicon dioxide (SiO2) - Microcrystalline quartz
Sandstone
Sedimentary Rock (Quartz Arenite)
Chert (variations include Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Cryptocrystalline silicon dioxide, SiO2)
Diamond
Natural Diamond (Carbon, C)
Fossilized Bivalve Shell
Class Bivalvia (fossilized)
Seashell Fossil
Gastropoda fossil
Fossilized Coral
Cnidaria (Hexacorallia)
Fossil Snail
Gastropoda fossil