Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Category
Browse marble specimens identified by the Rock Identifier community.
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert with Quartz Veining
Microcrystalline Quartz (SiO2)
Diamond (in Jewelry Setting)
Carbon (C) - Isometric-Hexoctahedral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Fossilized Shark Tooth in Matrix
Otodus sp. (likely Otodus obliquus)
Chert (Nodule)
Silicon Dioxide (SiO2)
Mother of Pearl (Nacre)
Nacre (Aragonite/Conchiolin), CaCO3 + Organic Polymers
Limestone
Calcium Carbonate (CaCO3)
Chert (Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)
Chert (Beach Pebble)
Microcrystalline Quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint/Gray Chalcedony)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Chert (Cryptocrystalline Quartz, SiO2)
Fossilized Shark Tooth
Otodus sp. (approximate genus) / Hydroxyapatite fossil
Fossilized Rugose Coral (Horn Coral)
Rugosa (Order) - often Grewingkia or Zaphrenthis
Flint
Chert (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert Pebble with Inclusion
Microcrystalline Quartz (SiO2)
Chert (Basanite / Jasper)
Microcrystalline quartz (SiO2)
Garnet in Matrix (Eclogite)
Eclogite, featuring Almandine or Pyrope Garnet [X3Y2(SiO4)3]
Abalone Shell (Mother of Pearl)
Aragonite (Biogenic Calcium Carbonate, CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (or Flint)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Sandstone
Arenite (primarily SiO2)
Diamond
Diamond (C)
Pearl
Calcium Carbonate (Aragonite/Calcite mixed with Conchiolin), CaCO3
Siltstone / Fine-grained Graywacke
Argillaceous siltstone
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Jasper/Common Chert Pebble)
Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Rough Diamond
Diamond (Native Element Carbon, C)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (specifically as a lithic artifact/projectile point)
Chert (Silicon dioxide, SiO2)
Chert Nodule in Limestone
Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Fossil Shark Tooth
Lamniform (Mackerel Shark) fossil tooth, likely Otodus or Cretalamna
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)