Amber
Succinite
Mineraloid
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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Brown Jasper (Likely)
Jasper (Cryptocrystalline Silicon Dioxide - SiO2)
Mineral
Mixed Gemstone and Mineral Collection
Silicon Dioxide (SiO2) based minerals and others
mineral
Polished fossil bone fragment
Fossilized bone, likely mammalian or reptilian; exact taxon cannot be determined from the image
fossil
Fossiliferous Limestone
Calcareous biomicrite / Calcium Carbonate (CaCO3)
sedimentary
Yellow Chert
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Amber
Succinite
Organic mineraloid
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
Amber-bearing rough specimen
Fossilized plant resin (amber; organic mineraloid), commonly succinite
gemstone
Jasper / Agate with Petrified Wood Inclusion
SiO2
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Pearl oyster shell with cultured pearls
Mollusk shell (likely Pinctada spp.) containing aragonite pearls, CaCO₃
gemstone
Fossilized Shark Tooth (Partial) or Coprolite
Elasmobranchii (fossil) or Coprolite (trace fossil)
fossil
Graphite
Graphite (Carbon, C)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Shark Tooth Fossil
Carcharocles megalodon or similar extinct shark tooth
fossil
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Nacre (Mother of Pearl)
Nacre (Biogenic Aragonite/Calcite composite, CaCO3)
mineral
Amber (Green variation)
Succinite
fossil
Fossil Shell
Brachiopod or Mollusk fossil
fossil
Fossilized Shell Fragment / Mother of Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral
fossil
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Fossiliferous Flint
Microcrystalline Quartz (SiO2) with Echinoid Fossil
sedimentary
Polished amber-colored translucent stone, likely citrine or yellow chalcedony
Most consistent with quartz (SiO₂), potentially citrine; translucent yellow chalcedony is another possibility
mineral
Chert (Tan/Yellow variety)
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Shark Tooth or Bone Fragment
Vertebrate Fossil (likely Carcharodon or similar genus)
fossil
Limestone or Sandstone Cobble
Sedimentary rock (Calcium carbonate or Quartz based)
sedimentary
Amber
Succinite (C10H16O)
mineraloid
Shark Tooth Fossil
Chondrichthyes (shark) tooth
fossil
Tufa Rock and Tumbled Gemstones
Calcareous Tufa (Calcium Carbonate, CaCO3)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
Sedimentary/Mineral
Sandstone (with Moss)
Quartz Arenite / Sandstone
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral