Gowganda Tillite (Puddingstone)
Glacial Diamictite (Gowganda Formation)
sedimentary
Category
Man Made Material (Jewelry, Metal Alloy)
Browse man made material (jewelry, metal alloy) specimens identified by the Rock Identifier community.
Learn about Man Made Material (Jewelry, Metal Alloy) in the encyclopedia
View all →
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Rose Quartz
Rose Quartz (SiO₂)
mineral
Diamond
Natural Diamond (Carbon, C)
mineral
Weathered chert or flint nodule
Microcrystalline quartz (SiO₂), commonly with chalcedony and minor iron oxides
sedimentary
Diamond (Emerald Cut)
Carbon (C)
mineral
Fossil Shark Tooth
Selachii (fossilized dentition)
fossil
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Diamond and Sapphire
Carbon (Diamond, C) and Aluminum Oxide (Sapphire, Al2O3)
gemstone
Turquoise
Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O
gemstone
Granite
Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)
igneous
Chalcedony (Common Opal or Agate variant)
Silicon Dioxide (SiO₂)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Chert (Black Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Likely weathered basalt or dark volcanic rock
Basalt; primarily plagioclase feldspar and pyroxene, with possible olivine and iron oxides
igneous
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified wood (SiO2)
fossil
Agate
Silicon dioxide (Chalcedony), SiO2
gemstone
Malachite
Malachite (Cu2(CO3)(OH)2 - a copper carbonate hydroxide mineral)
Mineral
Amber
Succinite (fossilized resin, C10H16O)
mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Greenstone / Greenschist
Greenschist (composed of Chlorite, Epidote, and Actinolite)
metamorphic
Black Obsidian
Amorphous volcanic glass (primarily SiO2)
igneous
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Boulder Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chrysocolla Cuprite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral composite
Dragon Vein Agate
Silicon dioxide / Chalcedony (with heat/dye treatment) SiO2
gemstone
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)
sedimentary
Chert (Jasper variation)
Chert (Cryptocrystalline microcrystalline Silicon Dioxide, SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2 with iron oxide impurities)
sedimentary
Tiger's Eye
Quartz with riebeckite inclusions (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Chert (varieties including Flint or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Diamond (in jewelry setting)
Cubic Carbon (C)
mineral
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Amber
Fossilized tree resin (Amorphous)
gemstone
Clear Quartz
Silicon Dioxide (SiO2)
mineral