Red Coral
Corallium rubrum
Category
Browse organic gemstone (succinite) specimens identified by the Rock Identifier community.
Red Coral
Corallium rubrum
Jasper
Silicon dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2) with impurities
Chert (Iron-stained or Dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper transition)
Microcrystalline Quartz (SiO2)
Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Chert (Black Chert / Flint)
Silicon Dioxide (SiO2)
Chert (Nodular)
Microcrystalline Silica (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (with Quartz Druzy)
Microcrystalline Silica (SiO2)
Chert / Flint
Silicon dioxide (SiO2)
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Mudstone variety with Oxidation)
Silicon dioxide (SiO2)
Green Chert (Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Pink Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Chert (Dark Variety / Flint)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (often called Jasper in this color)
Microcrystalline quartz (SiO2)
Chert (Siliceous Mudstone variant)
Microcrystalline quartz (SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz - SiO2)
Agate (Moss or Green Agate)
Silicon Dioxide (SiO2)
Petrified Wood (Silicified Wood)
Silicified fossil wood (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Amber
Fossilized Tree Resin (Successite)
Pink Opal
Hydrated Silica (SiO2·nH2O) with Palygorskite/Sepiolite inclusions
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with inclusions
Moss Agate / Chalcedony
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (Microcrystalline Quartz, $SiO_2$)
Chert (often called Jasper or Flint)
Microcrystalline Silica (SiO2)
Mother of Pearl (Nacre)
Calcium Carbonate (Aragonite) with organic conchiolin
Chert (Smooth River Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint Pebbles)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (often called Flint)
Chert (Cryptocrystalline Silica, SiO2)
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert
Chert (Microcrystalline Quartz, SiO2)
Moss Agate
Cryptocrystalline Quartz (SiO2 with Manganese or Iron Oxide inclusions)