Mineral (Man Enhanced)

Turquoise

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

Slag

Anthropogenic Vitreous Silica/Iron oxides

Lapis lazuli

Lapis lazuli; primarily lazurite (Na₃Ca(Si₃Al₃)O₁₂S), with calcite and pyrite

Iron Slag (Industrial Byproduct)

Anthropogenic Vitrification Product/Ferrous Slag

Opalite

Synthetic Opalite Glass

Polished agate (likely moss or plume agate)

Microcrystalline quartz, mainly chalcedony (SiO₂), with possible calcite or quartz vein inclusions

Metal Alloy (Likely Pewter or Sterling Silver)

Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

Bismuth

Bismuth (Bi)

Blue Sapphire (faceted in jewelry)

Corundum (Al2O3)

Polished gemstone tower assortment

Primarily quartz varieties and simulants; apparent amethyst (SiO₂), rose quartz (SiO₂), clear quartz (SiO₂), fluorite (CaF₂), sodalite, malachite, and possibly dyed or composite stones

Polished agate or chalcedony pebble

Microcrystalline quartz (SiO₂), likely chalcedony/agate

Dyed Blue Agate Slice

Silicon Dioxide (SiO2)

Dyed Agate Geode Slice

Silicon Dioxide (SiO2) - Banded Chalcedony

Rock crystal (clear quartz), possibly cloudy quartz

Quartz, silicon dioxide (SiO₂)

Polished blue-green metallic mineral specimen, likely bornite (“peacock ore”)

Bornite, Cu₅FeS₄; possibly chalcopyrite, CuFeS₂, with iridescent tarnish

Carnelian Agate

Silicon Dioxide (SiO2) with iron impurities

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Smelter Slag

Anthropogenic Silicate Slag

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Carnelian

Carnelian (a variety of Chalcedony, which is a microcrystalline quartz, SiO2)

Green glassy mineral fragment, possibly fluorite

Fluorite (calcium fluoride, CaF₂), tentative identification

Dyed Pink Quartzite

Tumbled and Dyed Quartzite (SiO2 with dye treatment)

Peacock Ore

Bornite (Cu5FeS4)

Opalite

Man-made Synthetic Glass (Silicon Dioxide with metal additives)

Diamond (or Cubic Zirconia)

Carbon (C) or Zirconium Dioxide (ZrO2)

Aura Quartz (Titanium/Gold coated)

Silicon Dioxide (SiO2) with metallic vapor deposition

Tiger's Eye

Silicon dioxide (SiO2) with crocidolite inclusions

Ruby

Corundum (Al2O3 with Chromium traces)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), likely milky quartz

Sandstone Anvil / Nutting Stone

Quartzose Sandstone (Sedimentary Rock)

Tumbled jasper/chert pebble

Microcrystalline quartz (SiO₂), likely jasper or silicified chert

Black Opal

Hydrated Silica (SiO2·nH2O)

Polished amber-like chalcedony (likely carnelian/ochre jasper)

Microcrystalline quartz, SiO₂; coloration likely from iron oxides/hydroxides

Opalite

Synthetic Opalized Glass

Tumbled clear quartz (rock crystal)

Quartz, silicon dioxide (SiO₂)

Pink Dyed Agate (Banded Chalcedony)

Silicon dioxide (SiO2) - variety Chalcedony

Black Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Clear quartz crystal (likely)

Quartz, silicon dioxide (SiO₂)

Corundum (Sapphire variant)

Aluminium oxide (Al2O3)

Sea Glass

Man-made vitreous material (silica-based glass)