Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
Category
Man Made Material, Not A Natural Rock Or Mineral Specimen
Browse man made material, not a natural rock or mineral specimen specimens identified by the Rock Identifier community.
Dyed Pink Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Citrine Quartz
Citrine (Silicon Dioxide - SiO2)
Mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide cement)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
sedimentary
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Ironstone Concretion / Goethite-Hematite Nodule
Goethite/Hematite (α-FeO(OH) / Fe2O3)
sedimentary
Shale (with minor calcite veining)
Clastic sedimentary rock (primarily clay minerals and quartz)
sedimentary
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz)
sedimentary
Rhyolitic Tuff
Rhyolitic Tuff / Pyroclastic rock
igneous
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
sedimentary
Pearl
Calcium Carbonate (mostly Aragonite), CaCO3 (with conchiolin)
mineral
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Chert (Flint)
Microcrystalline quartz (SiO2)
sedimentary
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Sedimentary Rock
Sandstone (Flagstone)
Arenite (composed primarily of SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Slate
Slate (Foliated Metamorphic Rock)
metamorphic
Limonite (Yellow Ochre)
FeO(OH)·nH2O (Hydrous iron(III) oxide-hydroxide mixture)
Mineral (Iron Ore)
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Smoky Quartz (Tumbled)
Smoky Quartz (SiO2 - Silicon Dioxide)
mineral
Dyed Blue Agate
Silicon Dioxide (SiO2)
Mineral
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Mineral
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
Mineral
Milky Quartz/Clear Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide - SiO2 with Iron impurities)
mineral
Dendritic Agate (Tree Agate)
Chalcedony (Silicon Dioxide, SiO2) with Manganese or Iron Oxide inclusions
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
mineral
Tree Agate (or Moss Agate)
Dendritic Agate (Silicon Dioxide - SiO2)
mineral
Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
mineral
Chert (Nodule)
Microcrystalline or Cryptocrystalline Silica (SiO2)
sedimentary
Pearl (Biogenic)
Nacre / Calcium Carbonate (CaCO3)
mineral
Vesicular Basalt or Scoria
Basalt (extrusive volcanic rock)
igneous
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)
Sedimentary / Metamorphic
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral