Reddish vesicular volcanic rock (likely scoria)
Scoria, a vesicular basaltic to andesitic lava; predominantly plagioclase, pyroxene, and iron-bearing volcanic glass
igneous
Category
Not A Rock (Animated Character)
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Learn about Not A Rock (Animated Character) in the encyclopedia
View all →
Golden Healer Quartz
Ferruginous Quartz (SiO2 with Fe2O3 inclusions)
mineral
Carnelian Agate
Carnelian (SiO2 with iron oxide impurities)
mineral
Tumbled green aventurine
Quartz (SiO₂), typically containing fuchsite mica or other chromium-bearing inclusions
mineral
Green Moss Agate (Tumbled)
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Agate (Moss or Dendritic Agate)
Chalcedony (Silicon Dioxide, SiO2)
mineral
Orbicular Jasper (Ocean Jasper)
Silica-rich Microcrystalline Quartz (SiO2) with various inclusions
sedimentary
Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Tumbled Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Likely polished labradorite or another feldspar-rich stone
Labradorite, a plagioclase feldspar: approximately (Ca,Na)(Al,Si)₄O₈
mineral
Tumbled kambaba jasper (likely)
Kambaba jasper, a silica-rich microcrystalline quartz aggregate, commonly containing fossilized cyanobacterial structures and dark green amphibole/pyroxene minerals
sedimentary
Agate
Chalcedony (SiO2)
mineral
Turquoise cabochon ring
Turquoise, hydrated copper aluminum phosphate — CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Tumbled green aventurine (probable)
Quartzite dominated by quartz (SiO₂), with green mica/fuchsite inclusions
mineral
Dalmatian jasper
Dalmatian stone, typically a leucocratic alkali-feldspar-rich porphyritic igneous rock with black arfvedsonite or aegirine inclusions
igneous
Quartz geode (chalcedony-lined geode)
Quartz, SiO₂; commonly botryoidal chalcedony with drusy quartz crystals
mineral
Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Amethyst
Amethyst (SiO2 with Iron impurities)
mineral
Indigo Gabbro
Gabbro (Alkali Gabbro)
igneous
Amazonite
Amazonstone (KAlSi3O8)
mineral
Green aventurine quartz (likely rough quartzite)
Quartz, SiO₂, with green mica/fuchsite or chlorite inclusions
metamorphic
Amethyst
Silicon Dioxide (SiO2) with trivalent iron (Fe3+) impurities
mineral
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Prehnite
Prehnite, Ca2Al(AlSi3O10)(OH)2
mineral
Red Jasper
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
sedimentary
Red Jasper (specifically Brecciated Jasper)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Jasper
Chalcedony (SiO2)
mineral
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Blue Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial pigment
mineral
Fluorite (Rainbow Fluorite Tower)
Fluorite (Calcium Fluoride, CaF2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Likely rough garnet
Garnet group, possibly almandine (Fe₃Al₂(SiO₄)₃); identification is uncertain from the image
mineral
Black Tourmaline
Schorl (complex sodium iron aluminum borosilicate)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper (specifically Yellow/Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Polished green aventurine (likely serpentine or quartzite)
Aventurine quartz, SiO₂; appearance may also resemble serpentinite, mainly Mg₃Si₂O₅(OH)₄
metamorphic