Quartz Crystal
Silicon Dioxide (SiO2)
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Quartz Crystal
Silicon Dioxide (SiO2)
Galena
Lead Sulfide (PbS)
Geode
Silicon dioxide (Quartz/Chalcedony) concretion
Quartz Pebble
Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Chalcedony
Silicon Dioxide (SiO2)
Limonite
FeO(OH)·nH2O
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
Agate Nodule
Silicon Dioxide (Quartz/Chalcedony), SiO2
Black Onyx
Chalcedony (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Jasper Beads
Microcrystalline Quartz (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Pink Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Flint / Chert
Microcrystalline quartz (SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Yellow Calcite
Calcite (CaCO3)
Celestite
Celestine (SrSO4)
Geode (Unopened)
Quartz/Chalcedony concretion
Fluorite
Calcium Fluoride (CaF2)
Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)
FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar group)
Celestite (Celestine)
Strontium Sulfate (SrSO4)
Carnelian / Agate
Silicon Dioxide (SiO2) - Chalcedony
Unidentified Dark Mineral or Rock
Indeterminate (Likely Silicon Dioxide or Carbon-based)
Jasper Pebble
Microcrystalline Quartz (SiO2)
Agate
Silicon Dioxide (Quartz), SiO2
Jasper
Microcrystalline Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Green Jasper / Chert
Microcrystalline Quartz (SiO2)
Pyrite
Iron Pyrite (FeS2)
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
Yellow Calcite (Polished Pebble)
Calcium Carbonate (CaCO3)
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
Pyrite (Fools Gold)
Iron Disulfide (FeS2)
Chert
Microcrystalline Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Banded Agate with Drusy Quartz
Cryptocrystalline Quartz (SiO2) with macrocrystalline Quartz
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)