Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Category
Anthropogenic Specimen (Man Made)
Browse anthropogenic specimen (man made) specimens identified by the Rock Identifier community.
Gastly (Trick or Trade Halloween Series)
Cellulose-carbonaceous composite (Lignocellulose laminated with pigmentary polymers)
Mineral (Synthetic - Paper and Ink Polymorph)
Sandstone (with banding)
Arenite (primarily SiO2)
sedimentary
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
metamorphic
Basalt River Stone
Basalt
igneous
Pink Quartzite
Quartzite (primarily SiO2)
metamorphic
Jasper or Chert
Silicon Dioxide (SiO2)
sedimentary
Rough Ruby (Corundum) in Zoisite Matrix
Al2O3 (Aluminum Oxide) with Ca2Al3(SiO4)3(OH)
mineral
Stilbite
Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Chrysocolla
Hydrated copper silicates (Cu, Al)2H2Si2O5(OH)4·nH2O
mineral
Moss Agate / Chalcedony
Silicon Dioxide (SiO2)
mineral
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
mineral
Petrified Wood
Silicified Wood (primarily SiO₂ / Silicon Dioxide)
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with impure Iron inclusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Red Jasper (Polished)
Jasper (Iron-rich Microcrystalline Quartz, SiO2)
sedimentary
Blue Chalcedony
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Citrine
Silicon Dioxide (SiO₂)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Red Jasper (possibly Agatized Jasper)
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
sedimentary
Amethyst (Tumbled)
Silicon Dioxide (SiO2 with iron impurities)
mineral
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite/Calcite/Aragonite)
sedimentary
Sardonyx Agate Sphere
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
mineral
Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)
Cryptocrystalline Quartz (SiO2) with inclusions
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Fulgurite
Lechatelierite (Silica glass), typically SiO2
mineraloid
K2 Jasper (K2 Granite)
Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)
igneous
Red Jasper
Jasper (Silicate mineral - SiO2)
sedimentary
Clear Quartz
SiO2 (Silicon Dioxide)
mineral
Greenschist (containing Epidote and Quartz)
Greenschist (Epidote-Chlorite-Actinolite Schist)
metamorphic
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
mineral
Amethyst Geode
Amethyst (Silicon Dioxide, SiO2)
mineral
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
igneous
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
Mineral
Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
mineral
Wonderstone
Rhyolite (Silicon Dioxide with Iron Oxide impurities)
igneous
Limonite/Goethite on Shale
Hydrous ferric oxides (FeO(OH)·nH2O) often associated with argillaceous rock
sedimentary