Amber
Succinite (specifically for Baltic amber); chemical formula approx. C10H16O
Organic Gemstone (fossilized resin)
Category
Organic (Mineraloid)
Browse organic (mineraloid) specimens identified by the Rock Identifier community.
Learn about Organic (Mineraloid) in the encyclopedia
View all →
Chert (Arrowhead Preform)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amber
Succinite (C10H16O)
mineral
Shale
Fissile Mudstone (Shale)
sedimentary
Gastropod Fossil (Snail Steinkern)
Class Gastropoda (internal mold)
sedimentary
Moss Agate
Chalcedony (Silicon Dioxide / SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Precious Red Coral
Corallium rubrum / Corallium japonicum
mineral (organic gemstone)
Moss Agate
Silicon Dioxide with inclusions (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Moss Agate
Cryptocrystalline Quartz (SiO2 with manganese or iron oxide inclusions)
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amber
Succinite (Fossilized Tree Resin)
fossil
Mookaite Jasper
Silicified Radiolarite (SiO2 with iron impurities)
sedimentary
Shale
Fissile mudstone (primarily clay minerals and silt-sized quartz)
sedimentary
Druzy Quartz on Vesicular Basalt
Silicon Dioxide (SiO2) in an extrusive Mafic igneous host rock
igneous
Tektite (Indochinite)
Tektite (High-silica natural glass)
mineraloid / impact glass
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Synthetic/Anthropogenic Mineraloid
Tektite (specifically Indochinite)
Tektite (Natural silica glass)
Mineraloid (Impact glass)
Cat's Eye Shell (Shiva Shell)
Operculum of the Turbo petholatus (Tapestry Turban Snail), predominantly Calcium Carbonate (Aragonite)
mineraloid / biogenic specimen
Ferruginous Slag (Iron Smelting Byproduct)
Fused Silicate Scoria (Amorphous mixture of FeO, SiO2, and CaO)
Antropogenic Glass / Mineraloid
Red Jasper
Jasper (a variety of Chalcedony, SiO₂)
Mineraloid (cryptocrystalline quartz)
Opalite
Synthetic Opalized Glass
mineraloid (man-made)
Cobalt Blue Sea Glass
Amorphous Silica Glass (SiO2 + CoO)
mineraloid / anthropogenic material
Slag Glass (Cullet)
Amorphous Silica (man-made), primarily SiO2 with trace metal oxides
Mineraloid / Synthetic Glass
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Opalite
Synthetic Opalized Glass (SiO2 + additives)
mineraloid (man-made)
Cullet Glass (sometimes mistaken for Blue Obsidian or Slag)
Amorphous Silicon Dioxide (SiO2) with chemical additives (e.g., Cobalt for blue color)
mineraloid / industrial byproduct
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Glass Nugget (Tumbled Glass)
Amorphous Silicon Dioxide (SiO2) with additives
mineraloid (man-made)
Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Sandstone with Algae Growth
Arenite with Chlorophyta/Lichen
sedimentary
Amber with dark mineral/organic inclusions
Fossilized plant resin (amber; chiefly polymerized diterpenoid resin)
gemstone
Petrified Wood
Silicified Wood (SiO2)
fossil
Shell Cameo (Sardonyx Shell)
Cassis madagascariensis (Sardonyx shell)
mineral (biogenic silica/calcium carbonate substrate)
Amber
Succinite (C10H16O)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous Shale
Laminated Mudrock with plant fossils
sedimentary