Mineral (Processed Metal)

Milky quartz with iron staining

Quartz (silicon dioxide, SiO₂), likely massive or vein quartz

Quartz Vein in Granite

Crystalline Silicon Dioxide (SiO2) in Granitic Matrix

Milky quartz fragment

Quartz, silicon dioxide (SiO₂)

Cubic Zirconia (Simulated Diamond)

Cubic Zirconia (ZrO2)

Copper Ore with Chalcocite

Copper sulfide (Cu2S) with associated copper-bearing minerals

Chalcopyrite (or Pyrite Ore)

CuFeS2 (Copper Iron Sulfide)

Dyed Chalcedony (Agate)

Silicon Dioxide (SiO2) with artificial pigment

Heat-Treated Citrine (Amethyst-based)

Quartz (Silicon Dioxide) - SiO2

Green glass-like cabochon, likely synthetic glass or resin

Unidentified green transparent material; possibly molded glass, synthetic spinel, or resin

Bornite (Peacock Ore) / Acid-treated Chalcopyrite

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2)

Mixed Quartz and River Pebbles (Stone Collection)

Mixed assortment containing mainly Silicon Dioxide (SiO2)

Dyed, polished stone beads (likely assorted agate or jasper)

Microcrystalline quartz, SiO₂ (chalcedony; exact stones cannot be determined from the image)

Granite

Felsic intrusive igneous rock

Tumbled yellow jasper

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Chalcedony (Yellow Agate)

Cryptocrystalline Quartz (SiO2)

Tumbled pale chalcedony (likely quartz)

Microcrystalline quartz, SiO₂; possibly pale agate or quartz

Green aventurine bead bracelet

Quartz (SiO₂), likely fuchsite-bearing aventurine

Cubic Zirconia (Simulated Diamond)

Zirconium Dioxide (ZrO2)

Biotite Granite

Phaneritic Felsic Igneous Rock

Tumbled green-yellow chalcedony (likely prehnite or serpentine)

Cryptocrystalline quartz (chalcedony), SiO₂; identification is uncertain from the photograph

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Rainbow Hematite (Titanium Coated)

Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Unidentified metallic mineral or metal-like specimen

Indeterminate from image; possibly galena (PbS) or a metallic sulfide

Aqua Aura Quartz

Titanium/Gold-coated Silicon Dioxide (SiO2)

Granite

Intrusive Igneous Rock

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Ironstone concretion

Siderite or Limonite-rich Concretion (FeO(OH)·nH2O)

Pyrite

Iron Disulfide (FeS2)

Mixed rock and mineral collection

Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials

Inlaid stone ring (likely jasper or agate)

Likely microcrystalline quartz (chalcedony, SiO₂), possibly jasper, with decorative mineral inlays

Industrial slag (iron/copper smelting slag)

Multiphase vitreous metallurgical slag; commonly iron-silicate glass with metal-oxide and metallic inclusions

Opalite

Synthetic Opalized Glass / Man-made Glass

Orbicular jasper (likely ocean jasper)

Silica-rich jasper, predominantly microcrystalline quartz (SiO₂), with iron-oxide and volcanic/mineral inclusions

Polished ocean jasper / orbicular jasper

Microcrystalline quartz (SiO₂), commonly with chalcedony, feldspar, and iron/manganese oxides

Obsidian (likely black volcanic glass)

Obsidian; primarily amorphous volcanic silica glass, approximately SiO₂-rich rhyolitic composition

Quartz Sand (Beach Sand)

Silicon Dioxide (SiO2)

Tumbled or broken translucent quartz-like fragment

Quartz (silicon dioxide, SiO₂), possibly chalcedony or calcite

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Tumbled carnelian (likely)

Chalcedony, microcrystalline quartz (SiO₂), iron-oxide colored variety

Tumbled blue glassy mineral, possibly sodalite or blue aventurine

Identification uncertain; likely sodalite (Na₈Al₆Si₆O₂₄Cl₂) or blue-dyed quartz/slag-like material

Gold Nugget

Native Gold (Au)