Mineral Based Composite

Stilbite

Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Likely rounded dark pebble

Indeterminate; possibly basalt, diabase, or a dark chert/river pebble

Polished fossiliferous limestone, possibly ammonite-bearing

Calcite-rich limestone (CaCO₃), with visible fossil or shell fragments

Gold Nugget

Native Gold (Au)

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)

Citrine

Citrine (Silicon Dioxide - SiO2)

Tumbled brown stone, possibly amber or polished agate

Indeterminate from image; possibilities include amber (fossilized plant resin, organic) or chalcedony/quartz (SiO₂)

Tumbled blue-gray stone, possibly chalcedony or quartzite

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

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

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

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Likely serpentine and polished hematite

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

Bumble Bee Jasper

Calcite-bearing Volcanic Tuff (not a true Jasper)

Sodium Polyacrylate (Superabsorbent Polymer)

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

Turquoise

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

Blue opalite glass (likely man-made)

Opalite glass; a silica-based amorphous glass, not natural opal

Water and Silt (Sedimentary Environment)

Suspended Sediment / H2O (dihydrogen monoxide)

Opalite

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

Gold Nugget

Native Gold (Au)

Scoria (Vesicular Basalt)

Vesicular Basalt

Banded Agate

Sedimentary Cryptocrystalline Quartz (SiO2)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Polished orbicular granite (likely larvikite or orbicular diorite)

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

Amethyst Geode

Amethyst (Silicon Dioxide), Formula: SiO2

Native Copper

Native Copper (Cu)

Granite pebble

Granite, a coarse-grained felsic intrusive igneous rock composed chiefly of quartz, feldspar, and mica

Blue resin-coated or dyed stone cabochon

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

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

Concrete with Aggregate

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

Weathered quartz-rich pebble, possibly granite or pegmatite

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

Sandstone

Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)

Asphalt aggregate (crushed stone in bitumen)

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

Clear quartz crystal (likely quartz fragment)

Quartz, silicon dioxide (SiO₂)

Yellow Jasper

Chalcedony (SiO2) with iron oxide inclusions

Peridot (likely, based on color and appearance)

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

Gold Nugget

Gold (Au)

Diamond

Carbon (C)

Mica Schist

Mica Schist (varies based on mineral makeup, often Biotite/Muscovite schist)

Rounded quartz-rich pebble

Likely microcrystalline quartz (SiO₂), possibly chert or chalcedony