Serpentine
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Category
Carved Stone
Browse carved stone specimens identified by the Rock Identifier community.
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Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Tiger's Eye
Quartz pseudomorph after crocidolite (SiO2)
gemstone
White Howlite
Howlite (Hydrated calcium borosilicate, Ca2B5SiO9(OH)5)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Bloodstone
Heliotrope (Silicon dioxide, SiO2)
mineral
Sardonyx
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Black Onyx
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Dumortierite Quartz
Al7BO3(SiO4)3O3 (Aluminum borate silicate)
mineral
Red Jasper
Red Jasper (SiO2 with Hematite inclusions)
mineral
Green Aventurine
Aventurine Quartz (SiO2) with Fuchsite inclusions
metamorphic
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Carnelian
Carnelian (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Satin Spar Selenite
Fibrous Gypsum (CaSO4·2H2O)
mineral
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite), $SiO_2$
mineral
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Nephrite Jade (River Pebble)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Anthracite Coal
Anthracite (Carbon-rich Sedimentary-to-Metamorphic Rock)
metamorphic
Red Garnet (Almandine-Pyrope series)
Garnet Group, Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
mineral
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Jasper (specifically variegated or swamp jasper beads)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Greenstone / Serpentinite
Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn silicate minerals including Antigorite, Lizardite, and Chrysotile)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Carnelian Agate
Silicon Dioxide (SiO2)
mineral
Red Jasper
Quartz (SiO2) with iron oxide inclusions
sedimentary
Greenstone / Serpentinite
Serpentinite (composed primarily of serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Red Dyed Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Granite
Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O, Na2O)
igneous
Sandstone
Sandstone (principally SiO2/Silicon Dioxide)
sedimentary
Unakite
Epidotized Granite
metamorphic
Red Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
mineral
Serpentine
Antigorite/Lizardite/Chrysotile complex: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Diorite
Phaneritic intermediate plutonic rock
Igneous
Granite
Phaneritic plutonic rock (SiO2 primary)
igneous
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
igneous