Chert Pebble (Jasper/Quartz variety)
Microcrystalline Quartz (SiO2)
Category
Browse marble specimens identified by the Rock Identifier community.
Chert Pebble (Jasper/Quartz variety)
Microcrystalline Quartz (SiO2)
Chert (Common Variety, Jasper)
Microcrystalline Quartz (SiO2)
Chert (Flint Nodules)
Chert (Microcrystalline Quartz, SiO2)
Coquina
Biogenic Limestone (Calcitic shells)
Gold and Diamond
Native Gold (Au) and Diamond (C)
Chert / Microcrystalline Quartz
Chert (SiO2)
Sandstone (likely Calcareous or Quartz-rich)
Arenite (SiO2 based typically)
Diamond
Native Carbon (C)
Kimberlite with Diamond
Kimberlite (Diamond formula: C)
Jasper (Green Jasper/Chert)
Silicon Dioxide (SiO2)
Diamond
Diamond (Pure Carbon, C)
Chert (Iron-stained)
Chert (SiO2 - Silicon Dioxide)
Chert (and/or Siltstone River Pebble)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Diamond
Diamond (pure Carbon, C)
Diamond
Native Carbon (C)
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite/Hematite and Chert)
Rough Diamond
Diamond (pure Carbon, C)
Diamond
Diamond (Native Carbon, C)
Amber (Cherry Amber)
Succinite (C10H16O)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Raw Diamond
Carbon (C)
Coquina
Bioclastic Limestone
Chert (specifically Flint or Common Chert)
Microcrystalline Quartz (SiO2)
Shell Cameo (Sardonyx Shell)
Cassis madagascariensis (Sardonyx shell)
Diamond
Native Carbon (C)
Peridot
Olivine ((Mg, Fe)2SiO4)
Hematite
Ferric oxide (Fe2O3)
Sandstone (likely Quartzose Sandstone with mineral staining)
Arenite (composed mainly of SiO2)
Diamond
Natural Diamond (Carbon, C)
Chert (Light Grey / Flint variant)
Cryptocrystalline Quartz (SiO2)
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Inclusions
Chert with Crinoid Fossil Impression
Microcrystalline Quartz (SiO2) with Crinoidea fossil impression
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Iridescent Ammonite
Ammonoidea (Species: likely Cleoniceras or Desmoceras); Mineral: Aragonite/Ammolite (CaCO3)
Ferruginous Sandstone (Ironstone)
Arenite with Iron-Oxide Cement (FeO(OH)·nH2O / Fe2O3)
Amber (with potentially inclusions)
Succinite (Fossilized Tree Resin)
Red Chert (Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Crinoid Stem Fossil
Crinoid columnal (Class Crinoidea)
Limestone
Calcite-rich sedimentary rock (CaCO3)
Sandstone (Greywacke)
Arenite / Wacke (Mainly SiO2 with various lithic fragments)
Coquina
Bioclastic Limestone
Fossil Shell (Bivalve)
Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)