Granite
Granite (Phaneritic igneous rock)
igneous
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Learn about Man Made Glass (Often Grouped With Minerals In Lapidary) in the encyclopedia
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Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(OH)₄(BO₃)₃Si₆O₁₈)
mineral
Slag (Industrial Byproduct)
Ferro-silicate glass (Slag)
Anthropogenic (Man-made industrial deposit)
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Brecciated Jasper
Brecciated Jasper (Microcrystalline Quartz / SiO2)
sedimentary
Peach Moonstone
Feldspar (KAlSi3O8) with inclusions
mineral
Serpentine (Healerite variety)
Serpentine group, Mg3Si2O5(OH)4
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC) / Moissanite (natural form)
mineral
Green Aventurine
Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)
metamorphic
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Red Chert (Jasper)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
sedimentary
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
sedimentary
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Antropogenic (Man-made glass byproduct)
Sphalerite with Galena and Calcite / Quartz display specimens
Zinc Iron Sulfide (Zn,Fe)S with Quartz (SiO2) / Aquamarine / Fluorite
mineral
Osumilite in Granite Matrix
(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30
mineral
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Chalcedony (Agate / Jasper Specimen)
Silicon Dioxide (SiO2)
mineral
Feldspar (Orthoclase)
Potassium Alveolar Silicate (KAlSi3O8)
mineral
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Anthropogenic (Man-made artifact)
Mica Sand / Vermiculite
Phyllosilicate group (typically Biotite or Muscovite)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
mineral and glass
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
mineral
Garnet (likely Almandine)
Almandine - Fe3Al2(SiO4)3
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Chert (Flint)
Chert (Cryptocrystalline Silica, SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Quartz with Tourmaline or Amphibole
Silicon Dioxide with silicate inclusions (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Demitasse Granite (Diorite-Granite transition)
Intermediate Plutonic Rock (Granodiorite/Diorite mix)
igneous
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Feldspar (Orthoclase/Microcline)
Potassium Feldspar (KAlSi3O8)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary