Diamond
Diamond (pure Carbon, C)
Category
Browse man made (synthetic rock) specimens identified by the Rock Identifier community.
Diamond
Diamond (pure Carbon, C)
Chert (specifically Flint)
Chert (SiO2)
Rough Diamond
Pure Carbon (C)
Obsidian
Volcanic glass
Chert (Polished River Pebble)
Chert (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
Clay (as a rock-forming material)
Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)
Coquina
Biogenic Limestone (Calcite, CaCO3)
Coquina
Biogenic Limestone (Coquina)
Chert
Chert (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
Gold (Elemental Metal)
Gold (Au)
Chert / Flint
Chert (varieties include Flint)
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Synthetic Zinc/Polycarbonate Composite (Bey-specimen)
Zinc Alloy (Zamak 3) with Polycarbonate (C15H16O2)n Overlay
Diorite (Gneissic)
Diorite
Pearl
Aragonite (CaCO3) with Conchiolin
Diabase (Greenstone)
Diabase (Dolerite)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Granite
Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)
Diamond
Diamond (pure carbon; C)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Cubic Zirconia (CZ)
Cubic Zirconium Dioxide (ZrO2)
Diamond (faceted)
Diamond (Pure Carbon, C)
Pearl
Pearl (Calcium Carbonate with organic conchiolin, CaCO3)
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Silver (Jewelry form)
Native Silver (Ag)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert / Jasper
Silicon Dioxide (SiO₂)
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)