Fossilized Turtle Bone
Testudines fossil
fossil
Category
Organic Material (Likely A Fruit Or Berry)
Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.
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Petrified Wood
Silicified Wood (SiO2)
fossil
Possible petrified wood or fossilized tooth
Unidentified silicified fossil; exact identification requires close examination
fossil
Fossilized Fish Vertebra
Vertebrata
fossil
Shark Tooth Fossil
Carcharocles megalodon or related shark taxa (Fossilized dentition)
fossil
Shark Tooth Fossil
Chondrichthyes fossil
fossil
Amber cabochon ring (likely amber)
Amber — fossilized plant resin; organic mineraloid, not a crystalline mineral
gemstone
Shungite
Non-crystalline carbonoid (Shungite)
metamorphic
Pyrite in Shale
Iron Disulfide (FeS2)
mineral
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
sedimentary
Amber (likely beach-worn amber or resinous material)
Fossilized plant resin; predominantly organic terpenoid polymers (succinite)
gemstone
Petrified Wood
Silicified Wood (primarily SiO₂ - Silicon Dioxide)
metamorphic
Banded chert or flint
Microcrystalline quartz (SiO₂), likely with iron-oxide and dark organic/mineral impurities
sedimentary
Yellow calcite fragment
Calcite (CaCO₃), likely honey/yellow calcite
mineral
Amber
Succinite
Mineraloid
Fossilized Dinosaur Egg
Fossilized Ovum
fossil
Moss agate (likely dendritic/chalcedony slab)
Cryptocrystalline quartz, SiO₂, with green amphibole or chlorite inclusions
mineral
Chert (with Epidote/Quartz veining)
Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions
sedimentary
Fossilized wood, likely silicified petrified wood
Silicified wood (fossil wood; commonly quartz/chalcedony replacing organic tissue)
fossil
Petrified wood
Silicified fossil wood; commonly quartz (SiO₂) replacing wood tissue
fossil
Petrified wood
Silicified fossil wood; commonly quartz (SiO₂) replacing woody tissue
fossil
Black Limestone with Calcite Veins
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Likely amber (fossil resin), with pieces of pale raw amber
Amber; fossilized plant resin, an amorphous organic material rather than a mineral species
fossil
Carved shell pendant or charm
Likely nacre (mother-of-pearl), composed chiefly of aragonite (CaCO₃) in an organic matrix
fossil
Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Shark Tooth Fossil
Carcharocles megalodon or similar extinct shark tooth
fossil
Petrified Wood
Silicified wood (permineralized organic tissue)
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint Nodule)
Microcrystalline quartz (SiO2)
sedimentary
Banded Jasper
Silicate Mineral (Microcrystalline Quartz / SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Shungite
Non-crystalline carbon (allotrope of carbon)
metamorphic
Jasper / Agate with Petrified Wood Inclusion
SiO2
mineral
Green Jasper (with Quartz veining)
Jasper (Silica-rich microcrystalline variety of Quartz), formula: SiO2
sedimentary
Fossilized Shark Tooth
Chondrichthyes teeth
fossil
Shark Tooth Fossil
Vertebrate fossilized dental remain
fossil
Yellow Jasper
Microcrystalline quartz, SiO2
sedimentary