Black Onyx
Chalcedony (SiO2)
gemstone
Category
Carved Stone
Browse carved stone specimens identified by the Rock Identifier community.
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Carnelian Agate
Silicon Dioxide (SiO2) - Chalcedony variety
gemstone
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
gemstone
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Labradorite (or Plagioclase Feldspar Pebble)
(Ca,Na)(Al,Si)4O8
mineral
Amazonite
Microcline (Amazonite variety), KAlSi3O8
mineral
Black Jasper (Etched)
Silicon Dioxide (SiO2) with impurities
mineral
Ruby in Quartz with Tourmaline
Corundum (Al2O3) in Silicon Dioxide (SiO2) with Schorl
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Tiger's Eye
Silicon Dioxide (SiO2) with Limonite/Goethite inclusions
mineral
Petoskey Stone
Hexagonaria percarinata (Fossilized rugose coral)
fossil
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Granite (Mount Rushmore)
Phaneritic Igneous Rock (Harney Peak Granite)
igneous
Diorite
Diorite
igneous
Carnelian Agate
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
mineral
Pink Granite (Water-Worn)
Felsic Plutonic Rock (Potassium Feldspar-rich)
igneous
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
igneous
Riverstone (Siltstone/Mudstone)
Siltstone
sedimentary
Obsidian
Obsidian (Volcanic Glass)
igneous
Blue Apatite
Apatite Group (Ca5(PO4)3(F,Cl,OH))
mineral
Green Aventurine
Quartz (Silicon Dioxide) with Fuchsite inclusions - SiO2
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
gemstone
Rose Quartz
Silicon Dioxide (SiO2)
gemstone
Malachite in Matrix
Copper Carbonate Hydroxide - Cu2CO3(OH)2
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Manganese or Iron
mineral
Greenstone
Chlorite schist or metabasalt depending on specific composition
Metamorphic
Jasper (Iron-stained Chert)
Silicon Dioxide (SiO2) with impurities of Hematite or Goethite
sedimentary
Mahogany Obsidian
Volcanic glass (high silica) with inclusions of Magnetite or Hematite
igneous
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Aventurine (Green)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Tiger's Eye (Nodule/Tumbled)
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
metamorphic
Sandstone
Clastic Sedimentary Rock
sedimentary
Obsidian
Volcanic Glass (70% or more SiO2)
igneous
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary