Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
Category
Browse antropogenic (man made material) specimens identified by the Rock Identifier community.
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
Turquoise
Turquoise, CuAl6(PO4)4(OH)8·4H2O
Diamond
Cubic carbon (C)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartzite (primarily SiO2)
Quartzite
Metamorphic Quartzite (primarily SiO2)
Quartz Pebble (Beach Chalcedony)
Silicon Dioxide (SiO2)
Chalk
Micrite (primarily Calcium Carbonate or CaCO3)
Diabase (Greenstone)
Diabase (also known as Dolerite)
Tumbled brown chalcedony (likely jasper or agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide staining
Granodiorite
Intrusive Igneous Rock
Diamond
Carbon (C)
Rutilated Quartz
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
Diamond
Diamond (pure carbon C)
Pearl
Calcium Carbonate (CaCO3) - Aragonite/Calcite
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
Sea Glass
Amorphous silicon dioxide (glass)
Chert / Flint
Chert (varieties include Flint)
Basalt
Basalt
Quartzite pebble
Quartzite (SiO2)
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Sea Glass (Turquoise/Aqua)
Amorphous Silica (SiO2) with transition metal dopants
Quartzite
Metamorphic Quartz Sandstone
Quartzite
Metamorphic Quartzite (SiO2)
Chert
Chert (Microcrystalline Quartz)
Sea Glass
Amorphous Silica (Glass) SiO2
Blue Goldstone
Aventurine Glass (Silicon Dioxide infused with Cobalt/Copper)
Blue Slag Glass
Ferro-silicate glass (Slag)
Cullet Glass (Strawberry Glass)
Amorphous Silicon Dioxide (SiO2) with metallic dopants
Granite
Intrusive Igneous Rock (Granitic)
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Granite
Phaneritic Felsic Igneous Rock
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
Quartzite
Metamorphic Quartzite (SiO2)
Fossilized Coral (Petoskey Stone / Hexagonaria)
Hexagonaria percarinata / Rugosa coral (CaCO3)