Not A Rock (Man Made Industrial Metal)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Gold Nuggest

Native Gold (Au)

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Granite (with Beryl/Aquamarine)

Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)

Gold Nugget

Native Gold (Au)

Sapphire (likely blue synthetic sapphire or blue glass in a ring)

Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.

Pyrite

Iron Sulfide (FeS2)

Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Limonite (Ochreous)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Chert (specifically White Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)

Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)

Gold Flake

Native Gold (Au)

Sodalite (blue beads) and Clear Quartz (clear beads)

Sodalite: Na4Al3Si3O12Cl; Quartz: SiO2

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Blue-dyed Quartz Druzy

Silicon Dioxide (SiO2) with artificial pigment

Obsidian

Volcanic Glass (Amorphous SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Pink Lepidolite

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

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2

Gold Nugget

Native Gold (Au)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Gold Nugget

Native Gold (Au)

Natural Gold Nugget

Native Gold (Au)

Chert (Dark Variety / Flint)

Silicon Dioxide (SiO2)

Quartzite Cobble

Quartzite (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Pallasite Meteorite (likely Imilac or Brenham)

Stony-Iron Meteorite (Pallasite)

Beryl (var. Heliodor or Aquamarine)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)

Aventurine

Quartz (SiO2) with inclusions of Fuchsite

Quartzite

Quartzite (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Diamond

Diamond (Carbon, C)

Obsidian

Volcanic glass

Pearl

Biogenic CaCO3 (Aragonite and Calcite)

Oak-grain Laminate (Industrial/Decorative Furniture Finish)

Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)