Mineral Based Composite

Amethyst Geode

Silicon Dioxide (SiO2) with iron impurities

Native Gold

Gold (Au)

Faceted Peach Morganite (Beryl)

Morganite (Be3Al2Si6O18 with trace Manganese)

Gold Nugget

Native Gold (Au)

Blue calcite (probable)

Calcite, CaCO₃

Rough Topaz

Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Stilbite

Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Opalite-style pendant (likely synthetic glass, not natural opal)

Opalescent glass; commonly sold as “opalite” (not a recognized mineral species)

Tumbled blue-gray stone, possibly chalcedony or quartzite

Likely microcrystalline quartz (SiO₂), but the image is insufficient for confident identification

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Tumbled carnelian agate with dark mineral inclusions

Carnelian, an orange variety of microcrystalline quartz (chalcedony), SiO₂; dark inclusions are likely iron oxides/hydroxides, possibly hematite, goethite, or a basaltic/matrix fragment

Amethyst Geode

Amethyst (Silicon Dioxide), Formula: SiO2

Sodium Polyacrylate (Superabsorbent Polymer)

Sodium Polyacrylate [-CH2-CH(COONa)-]n

Likely serpentine and polished hematite

Serpentine-group minerals, commonly antigorite/lizardite; hematite, Fe₂O₃

Banded Agate

Sedimentary Cryptocrystalline Quartz (SiO2)

Turquoise

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

Polished orbicular granite (likely larvikite or orbicular diorite)

Quartz/feldspar-bearing granitoid with dark amphibole–biotite minerals; exact variety requires testing

Water and Silt (Sedimentary Environment)

Suspended Sediment / H2O (dihydrogen monoxide)

Gold Nugget

Native Gold (Au)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Concrete with Aggregate

Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)

Native Copper

Native Copper (Cu)

Scoria (Vesicular Basalt)

Vesicular Basalt

Asphalt aggregate (crushed stone in bitumen)

Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen

Weathered quartz-rich pebble, possibly granite or pegmatite

Quartz (SiO₂) with probable feldspar and minor mica/iron-oxide inclusions

Conglomerate

Polymictic Conglomerate

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Clear quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Blue resin-coated or dyed stone cabochon

Likely dyed chalcedony/agate (microcrystalline quartz, SiO₂); exact material is uncertain from the image

Yellow Jasper

Chalcedony (SiO2) with iron oxide inclusions

Gold Nugget

Gold (Au)

Diamond

Carbon (C)

Opalite

Synthetic Glass (typically Silica/Magnesium based with metal additives)

Small marine shell fragment

Calcareous shell, primarily calcium carbonate (aragonite or calcite); exact taxon indeterminate

Rounded quartz-rich pebble

Likely microcrystalline quartz (SiO₂), possibly chert or chalcedony

Pyrite

Iron Pyrite (FeS2)

Peridot (likely, based on color and appearance)

Olivine group mineral, specifically (Mg,Fe)2SiO4 (Forsterite-Fayalite solid solution series)

Bloodstone (also known as Heliotrope)

Silicon Dioxide (SiO2) - variety of Chalcedony

Bauxite

Alumina-rich rock (consisting of Gibbsite, Boehmite, and Diaspore)

Dalmatian jasper

Orbicular rhyolite, commonly marketed as Dalmatian jasper; quartz–feldspar volcanic rock with dark aegirine/arfvedsonite-like inclusions