Gold Nugget
Native Gold (Au)
mineral
Category
Sedimentary (Chemical)
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Chemical) in the encyclopedia
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Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Gabbro
Gabbro (Coarse-grained mafic intrusive igneous rock)
igneous
Weathered Gabbro or Diorite (Igneous Cobble)
Phaneritic Basic/Intermediate Igneous Rock
igneous
Red Scoria (Lava Rock)
Scoria (Vesicular Basalt)
igneous
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (composed mainly of SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral / metamorphic
Red Rhyolite Porphyry
Rhyolite (Porphyritic texture)
igneous
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Quartzite)
Silicon Dioxide (SiO2)
mineral
Pink Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Dyed Pink Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Dalmatian Stone
Dalmatian Stone (a peralkaline igneous rock consisting of Feldspar, Quartz, and Arfvedsonite)
igneous
Slag Glass
Amorphous Silicate (Man-made)
industrial byproduct
Agate
Chalcedony (SiO2)
Mineral
Granite Pebble
Granite (Felsic intrusive igneous rock)
igneous
Diabase (also known as Dolerite)
Diabase / Microgabbro
igneous
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Halite
Halite (NaCl)
Mineral
Banded Agate (Polished Slice)
Chalcedony (SiO2) with Quartz
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Moss Agate
Chalcedony (Silicon Dioxide) with inclusions - SiO2
mineral
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartzite (with possible Calcite/Limestone weathering)
Quartzite (primarily SiO2)
metamorphic
Sea Glass (specifically Frosted White)
Amorphous Silica (substance: Sodium-calcium silicate glass)
Mineraloid (Anthropogenic/Man-made rock)
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite Pebble (with Quartz veins)
Quartzite (SiO2)
metamorphic