Fossil shark teeth
Probably fossilized shark teeth, possibly *Otodus* or *Carcharhinus* species
fossil
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
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Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Cubic Zirconia
Cubic Zirconium Dioxide (ZrO2)
mineral
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Amber
Succinite (Fossilized Resin)
fossil
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Shell
Invertebrate fossil (Bivalvia or Brachiopoda)
fossil
Iron-stained quartz-rich rock, likely quartzite or silicified breccia
Quartz (SiO₂), possibly quartzite with limonite/goethite iron oxides
metamorphic
Rose quartz
Quartz (silicon dioxide, SiO₂), pink massive variety
mineral
Weathered granite pebble
Granite, mainly quartz, feldspar, and mica; approximate composition SiO₂-rich continental crust
igneous
Rose quartz
Quartz, silicon dioxide (SiO₂), pink variety
mineral
Glacial erratic boulder
Likely weathered sandstone or quartzitic sandstone; exact identification requires a fresh surface and locality
sedimentary
Vesicular basalt (scoria-like volcanic rock)
Vesicular basalt; commonly composed of plagioclase, pyroxene, olivine, and volcanic glass
igneous
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Vesicular basalt
Basalt, typically composed of plagioclase feldspar, pyroxene, and minor olivine or iron oxides
igneous
Polished brecciated jasper (likely septarian or iron-rich jasper)
Microcrystalline quartz (chalcedony), SiO₂, with iron oxides and possibly calcite or other rock fragments
sedimentary
Calligraphy Stone
Fossiliferous Stromatolite Limestone (also known as Arabic Script Stone, Miriam Stone, or Elephant Skin Jasper)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Common Jasper/Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Puddingstone (Quartzite Conglomerate with Jasper inclusions)
Metaconglomerate (Silicon Dioxide, SiO2)
sedimentary
Labradorite (Polished Sphere)
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Quartz Pebbles
Silicon Dioxide (SiO2)
mineral
Banded Iron Formation (BIF) / Jasper
Banded Iron Formation (primarily Quartz/SiO2 and Hematite/Fe2O3)
sedimentary
Citrine Quartz (Yellow Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Puddingstone (Gowganda)
Jasper-clast Polymictic Conglomerate (Gowganda Formation)
sedimentary
Breccia
Breccia - Clastic sedimentary rock
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Banded Flint (Chert)
Silicon Dioxide (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Unakite
Unakite (Metamorphosed granite)
metamorphic
Yellow Jasper
Silicon Dioxide with iron inclusions (SiO2)
sedimentary
Banded Iron Formation (Jaspillite)
Banded Iron Formation (BIF) / Jaspillite
sedimentary
Red Jasper (Mahogany Obsidian variant similarity)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (White Chert)
Silicon Dioxide (SiO2)
sedimentary
Amazonite
Microcline (K(AlSi3O8))
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Chlorastrolite (Isle Royale Greenstone)
Chlorastrolite (Pumpellyite-(Mg,Fe2+): Ca2MgAl2(Si2O7)(SiO4)(OH)2∙H2O)
mineral