Aura Quartz Bead
Silicon dioxide (SiO2) with metal coating
mineral with artificial coating
Category
Sedimentary Or Metamorphic (Base Substrate)
Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Metamorphic (Base Substrate) in the encyclopedia
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Gneiss
Gneissic Metamorphic Rock
metamorphic
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper
Jasper (Silicon Dioxide Si₂O₃)
sedimentary
Pink Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
metamorphic
Gneiss
Metamorphic Gneiss
metamorphic
Basalt River Stone
Basalt (Mafic volcanic rock)
igneous
River Pebble (Grantoid/Quartzite)
Quartz-rich igneous rock (Granitoid)
igneous
Lava Rock (Basaltic Scoria)
Vesicular Basalt
igneous
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
mineral
River Stone (Basalt or Siltstone)
Basalt (extrusive igneous rock) or fine-grained Siltstone
igneous
Granite Pebble (River Rock)
Phaneritic Felsic Igneous Rock
igneous
Mica (Muscovite or Biotite)
Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)
mineral
Jasper (Red and Yellow)
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Gravel (Crushed Stone Aggregates)
Mixed Siliciclastic / Carbonate Aggregate
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Quartz Vein in Host Rock (Likely Slate or Shale)
Hydrothermal Quartz (SiO2) in Pelitic host rock
metamorphic
Red Jasper
Jasper (Silicon Dioxide, SiO2)
mineral
Unidentifiable Rock Fragment
Uncertain
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Banded Gneiss
Metamorphic Gneiss
metamorphic
Yellow Agate
Agate (Varietal form of Chalcedony/Quartz, SiO2)
mineral
Quartzite (or Chert/Flint gravel)
Quartzite (SiO2 with iron oxide inclusions)
metamorphic
Beach Pebbles and Quartz Aggregates
Quartz pebbles and biogenic fragments (SiO2, CaCO3)
sedimentary
Gneiss (Metamorphic Pebble)
Metamorphic Rock (Quartz-Feldspar-Biotite Gneiss)
metamorphic
Sandstone (Quartzose Pebble)
Clastic Sedimentary Rock (Litharenite/Quartz arenite)
sedimentary
Quartzite Pebble
Quartzite (SiO2 based)
metamorphic
Gneiss (Augen Gneiss)
Augen Gneiss
metamorphic
Limonite pseudomorph after Pyrite
Goethite/Limonite FeO(OH)·nH2O
mineral
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Red Jasper (Quartzite)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Gneiss (River Cobble)
Gneiss
metamorphic
Greenschist
Greenschist (composed mainly of chlorite, epidote, actinolite, and albite)
metamorphic
Quartz heart (likely milky/included quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Amethyst and Gravel Collection
Amethyst (Silicon Dioxide, SiO2)
mineral
Hand-Drawn Trading Card (Amateur Artwork)
Cellulose-based substrate with wax/graphite/ink deposit (n/a for minerals)
Organic/Synthetic Composite (Paper and Pigment)
Anthracite Coal
Anthracite (Carbon based)
metamorphic
Titanium Quartz (Aura Quartz)
Silicon Dioxide (SiO2) treated with Titanium
mineral
Gneiss
Gneiss (Metamorphic Rock)
metamorphic