Mineral Description (Anthropogenic Material)

Red Sandstone

Arenite (with Iron Oxide pigmentation)

Weathered fossiliferous limestone pebble

Calcitic limestone, predominantly CaCO₃ (likely containing fossil or bioclast fragments)

Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 principal component)

Polished crescent-shaped stone pendant

Likely black jade, basalt, or other dark silicate stone; exact identification requires testing

Granite

Granite (Phaneritic intrusive igneous rock)

Fossil shark teeth

Probably fossilized shark teeth, possibly *Otodus* or *Carcharhinus* species

Dalmatian jasper

Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂), typically massive rose quartz colored by trace elements and microscopic inclusions

Banded calcite (onyx marble)

Calcite, CaCO₃; commonly sold as “honey onyx” or “Pakistan onyx”

Diamond

Carbon (C)

Weathered quartz-rich rock fragment

Likely quartz-bearing sandstone or granitic rock; exact identification is uncertain from the image

Likely quartz-bearing mineral aggregate

Quartz (SiO₂), possibly mixed with mica or feldspar

Polished ocean jasper (orbicular jasper)

Microcrystalline quartz (SiO₂), commonly with chalcedony and iron-rich alteration minerals

Tumbled blue-gray stone beads, likely labradorite or dyed quartz

Probable labradorite (plagioclase feldspar; approximately NaAlSi₃O₈–CaAl₂Si₂O₈), though exact identification requires testing

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Precious Opal

Hydrated Silica (SiO2·nH2O)

Tumbled Rose Quartz

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Red jasper

Jasper (microcrystalline quartz, SiO₂), iron-oxide-rich variety

Brick

Fired clay or Ceramic material (no specific mineralogical scientific name as it's a composite)

Petrified Wood

Silicified Wood (SiO2)

Chert (specifically Flint or Jasper variant)

Microcrystalline quartz (SiO2)

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)

Sandstone (likely Arkosic or Lithic Sandstone)

Clastic Sedimentary Rock (SiO2 with assorted minerals)

Sandstone

Arenite (SiO2 primarily)

Sandstone (with Lichen)

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Quartz Arenite)

Sandstone (Chemical formula: primarily SiO2)

River Stone (Quartzite/Siltstone mixture)

Silicon Dioxide (SiO2) based metamorphosed sandstone

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Polished granite

Granite; chiefly quartz, feldspar, and mica/amphibole

Green Jasper Pebble

Microcrystalline Quartz (SiO2) with impurities

Tumbled turquoise

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Dalmatian jasper

Dalmatian stone, typically a leucocratic alkali-feldspar-rich porphyritic igneous rock with black arfvedsonite or aegirine inclusions

Sandstone (Ferruginous)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)

Jasper (Picture Jasper variety)

Silicon Dioxide (SiO2) with impurities

Red Sandstone

Arenite (Ferruginous Sandstone)

Quartzite with Glauconitic or Iron staining

Quartzite (SiO2 with accessory minerals)

Petrified Wood

Silicified Wood (primarily Quartz/SiO2)

Polished hematite-rich ironstone

Hematite (Fe₂O₃), likely mixed with magnetite and iron-rich jasper

Granite Glacial Erratic

Intrusive Phaneritic Felsic Rock (Granite)