Yellow Jasper
Microcrystalline quartz, SiO2
sedimentary
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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Agate with Fossil Bone
Silicified bone in Chalcedony (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Graphite
Graphite (Carbon, C)
mineral
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
Ironstone concretion (likely hematite-rich)
Ferruginous concretion; primarily iron oxides/hydroxides, commonly hematite (Fe₂O₃) and goethite (FeO(OH))
sedimentary
Fossil Shell
Brachiopod or Mollusk fossil
fossil
Fossilized Shell in Limestone
Carbonate sedimentary rock with Bivalvia or Brachiopoda remains
fossil
Fossilized Shell
Invertebrate fossil (phylum Mollusca)
fossil
Amber (Green variation)
Succinite
fossil
Graphite-bearing schist (probable)
Graphite–quartz–mica schist; chiefly graphite (C), quartz (SiO₂), and mica
metamorphic
Polished fossil bone fragment
Fossilized bone, likely mammalian or reptilian; exact taxon cannot be determined from the image
fossil
Chert (Iron-stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Red coral chip bracelet
Corallium spp.; skeleton composed primarily of calcium carbonate (aragonite)
gemstone
Fossiliferous Limestone
Fossiliferous Limestone (containing bioclasts)
sedimentary
Limestone or Sandstone Cobble
Sedimentary rock (Calcium carbonate or Quartz based)
sedimentary
Fossilized Shell Fragment / Mother of Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite biomineral
fossil
Petrified wood (possible)
Silicified wood; fossilized tree tissue, commonly replaced by microcrystalline quartz (SiO₂)
fossil
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Fossiliferous Flint
Microcrystalline Quartz (SiO2) with Echinoid Fossil
sedimentary
Amber-bearing rough specimen
Fossilized plant resin (amber; organic mineraloid), commonly succinite
gemstone
Brown Jasper (Likely)
Jasper (Cryptocrystalline Silicon Dioxide - SiO2)
Mineral
Pearl oyster shell with cultured pearls
Mollusk shell (likely Pinctada spp.) containing aragonite pearls, CaCO₃
gemstone
Petrified Wood
Silicified Wood (SiO2)
sedimentary
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
Poppy Jasper
Microcrystalline Quartz (SiO2) with mineral inclusions
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite Geode
Iron Disulfide (FeS2)
mineral
Fossilized Bivalve
Phylum Mollusca
fossil
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variation)
Chert (Cryptocrystalline microcrystalline Silicon Dioxide, SiO2)
sedimentary
Mixed Gemstone and Mineral Collection
Silicon Dioxide (SiO2) based minerals and others
mineral