Sedimentary Rock Or Mineral (Depending On Origin And Purity)

Sandstone

Arenite

Limestone

Calcium Carbonate (CaCO3)

Diamond

Carbon (C)

Sandstone

Clastic sedimentary rock (primarily quartz arenite)

Small gray-green pebble (likely fine-grained volcanic rock)

Indeterminate; possibly andesite or basalt

Mixed collection of natural stones

Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks

Graphite-rich schist (likely graphite ore)

Graphite-bearing schist; predominantly graphitic carbon (C) with mica, quartz, and possible feldspar

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Small colored gemstone or glass cabochons (uncertain)

Not identifiable from the image; the pieces may be colored glass or synthetic stones rather than natural minerals.

Turquoise (Tumbled/Polished)

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Limestone (with Calcite Veining)

Calcium Carbonate (CaCO3)

Hag Stone

Perforated sedimentary rock (typically limestone, sandstone, or flint)

Fossilized Bone

Permineralized Vertebrate Bone

Sandstone

Clastic Sedimentary Rock

Sandstone

Clastic sedimentary rock (primarily SiO2)

Starfish Fossil

Asteroidea fossil

Breciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Opal ring

Common opal, likely synthetic or assembled blue-green opal (hydrated amorphous silica, SiO₂·nH₂O)

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Sandstone

Arenite (SiO2-rich)

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone

Sandstone (clastic sedimentary rock)

Sandstone

Arenite (SiO2 primarily)

Shark Tooth Fossil

Chondrichthyes (class) fossilized tooth

Sandstone

Clastic Sedimentary Rock

Sandstone pebble

Sandstone (siliciclastic sedimentary rock)

White quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂); possibly quartzite, a metamorphosed quartz sandstone

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Likely green-brown jasper or iron-stained chert

Microcrystalline quartz (SiO₂), possibly iron-oxide-stained chert/jasper

Sandstone (Quartzose)

Arenite

Quartz

Silicon Dioxide (SiO2)

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium) - CuAl6(PO4)4(OH)8·4H2O

Fish Fossil in Limestone

Lycoptera (likely) in Micritic Limestone

Sandstone

Sedimentary Rock (Quartz arenite / Lithic sandstone)

Jasper and Chalcedony Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz

Silicon Dioxide (SiO2)

Mixed tumbled stones

Mixed aggregate of quartz, chalcedony, jasper, feldspar, and other common silicate minerals

Likely raw black tourmaline or dark amphibole fragment

Possibly schorl, NaFe3Al6(BO3)3Si6O18(OH)4; identification is uncertain from the image

Quartz (Milky / Clear Quartz Fragment)

Silicon Dioxide (SiO2)

Angel Skin Coral

Corallium rubrum / Corallium spp. (Calcium Carbonate, CaCO3)

Sandstone

Arenite (SiO2 based)

Sandstone (Pebble)

Arenite (primarily SiO2)