Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Category
Amorphous Solid
Browse amorphous solid specimens identified by the Rock Identifier community.
Learn about Amorphous Solid in the encyclopedia
View all →
Wonderstone
Rhyolite (Silicon Dioxide with Iron Oxide impurities)
igneous
Basalt with Quartz/Calcite Veins
Aphanitic Mafic Igneous Rock with Hydrothermal Veining
igneous
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt
igneous
Flower Agate
Chalcedony (SiO2) with Scolecite/Opaque inclusions
mineral
Granite Pebble
Intrusive Felsic Igneous Rock (primarily SiO2 with Al2O3, K2O, Na2O)
igneous
Picture Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Dalmation Jasper
Dalmation Stone (perthitic feldspar with arfvedsonite)
igneous
Vesicular Basalt (or Scoraceous Basalt)
Basalt (Vesicular texture)
igneous
Vesicular Basalt (or Scoria)
Mafic extrusive igneous rock with vesicles
igneous
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Dalmatian Jasper (Dalmatian Stone)
Perthitic feldspar with Arfvedsonite inclusions
igneous
Dalmatian Jasper
Peralkaline Quartz Feldspar Porphyry
igneous
Peacock Ore
Bornite (Cu5FeS4) or Acid-Treated Chalcopyrite (CuFeS2)
mineral
Fossil Shark Tooth (embedded in matrix)
Lamniformes (likely Cretalamna or Squalicorax) within phosphatic/calcareous matrix
sedimentary
Green glass-like cabochon, likely synthetic glass or resin
Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin
gemstone
Aura Quartz (Pink/Magenta Aura Quartz)
Silicon Dioxide (SiO2) treated with vapor-deposited precious metals
mineral
Aura Quartz (Cranberry or Magenta Aura Quartz)
Silicon dioxide coated with titanium/niobium (SiO2)
mineral
Granite (phaneritic background) with Limestone/Calcite carving
Felsic Igneous Plutonic Rock (background) / Calcium Carbonate (CaCO3) (carving)
igneous and sedimentary
Vesicular Basalt / Scoria pebble
Extrusive igneous rock with amygdaloidal infilling
igneous
Fairy Stone (Staurolite Concretion)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2) with Bornite (Cu5FeS4) oxidation
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Cubic Zirconia (Faceted)
Zirconium Dioxide (ZrO2)
mineral
Heat-Treated Citrine (Amethyst Cathedral with Agate inclusions)
Silicon Dioxide (SiO2) with iron impurities
mineral
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
metamorphic
Satin Spar Selenite
Gypsum (CaSO4·2H2O)
mineral
Tumbled blue stone with a drilled hole
Likely dyed or naturally blue chalcedony/agate; identity cannot be confirmed from the photo
mineral
Amethyst Geode
Silicon Dioxide (SiO2) with iron impurities
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Blue Howlite
Dyed Howlite (Ca2B5SiO9(OH)5)
mineral
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Amethyst (Geode)
Silicon Dioxide with Iron impurities (SiO2)
mineral
White Howlite
Howlite (Calcium borosilicate hydroxide, Ca2B5SiO9(OH)5)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Basalt (Vesicular)
Extrusive mafic igneous rock
igneous
Quartz-veined Diabase or Basalt Pebble
Diabase or Basalt with Hydrothermal Quartz Veins (SiO2)
igneous
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
mineral
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Polished tiger’s-eye
Tiger’s-eye, a chatoyant quartz variety; SiO₂ with fibrous pseudomorphic crocidolite/goethite inclusions
mineral
Polished blue banded agate slice
Chalcedony (microcrystalline quartz), SiO₂, commonly with trace iron and other coloring elements
mineral