Mineral (Processed Metal)

Green fluorite (likely rough fragment)

Fluorite, CaF₂

Orgonite Pyramid with Amethyst and Quartz

Silicon dioxide (Quartz/Amethyst) embedded in resin with metal shavings

Copper Ore

Cupriferous rock mixture (contains Chalcopyrite and Bornite)

Aura Quartz (Cranberry or Magenta Aura Quartz)

Silicon dioxide coated with titanium/niobium (SiO2)

Aura Quartz (Coated Quartz)

Silicon Dioxide (SiO2) coated with vaporized metals

Quartz Vein in Basalt or Mafic Rock

Silicon Dioxide (SiO2) vein in volcanic/mafic matrix

Bauxite

Bauxite (Al(OH)3, AlO(OH), AlOOH)

Cut gemstone ring, likely diamond

Diamond (carbon, C), faceted gemstone; exact stone identification is uncertain from the image

Diamond ring (likely diamond cluster band)

Diamond, crystalline carbon (C), set in a metal ring

Silver (Sterling Silver)

Argentum (Ag) mixed with Copper (Cu); Formula: Ag+Cu

Small metallic mineral fragment

Unidentified metallic sulfide or native-metal fragment

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).

Gold Nugget

Gold (Au)

Bauxite

Aluminum ore / Hydrated aluminum oxides

Lepidolite

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

Titanium Quartz (Aura Quartz)

Silicon Dioxide (SiO2) treated with Titanium

Buffalo Nickel (Indian Head Nickel)

Cupronickel (75% Copper, 25% Nickel)

Silicon

Element Si

Gold Ore (Auriferous Quartz with Chalcopyrite/Pyrite)

Au (Native Gold) in Quartz (SiO2) with FeS2 (Pyrite) or CuFeS2 (Chalcopyrite)

Gold Ore

Gold-bearing Quartz (Native Gold, Au)

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Aura Druzy Agate (Star Shape)

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating

Aura Quartz / Rainbow Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Opalite

Synthetic Opalized Glass

Aura Quartz Geode (Angel Aura Quartz)

Silicon Dioxide (SiO2) bonded with precious metals

Aura Quartz

Titanium or Gold bonded Silicon Dioxide (SiO2)

Silicon Carbide

Silicon Carbide (Moissanite / Carborundum), SiC

Lepidolite

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

Costume Jewelry with Synthetic Gemstones

Synthetic Cubic Zirconia and Glass (SiO2 / ZrO2)

Serpentine

Serpentine subgroup (Mg,Fe)3Si2O5(OH)4

Ring with an Orange Inlay

N/A (Man-made object)

Indeterminate metallic mineral fragments

Possibly pyrite, chalcopyrite, or metallic sulfide-bearing rock

Native gold-bearing sulfide specimen

Native gold (Au), likely intergrown with pyrite (FeS₂) or chalcopyrite (CuFeS₂)

Gem-set gold ring

Likely gold alloy set with a colorless gemstone, possibly diamond or clear quartz; the stone cannot be identified reliably from the image

Copper

Native Copper (Cu)

Opalite-style glass pendant

Man-made opalescent glass (not natural opal)

Gossan (Iron Hat)

Hydrous Iron Oxides (predominantly Goethite FeO(OH) and Limonite)

Iron Slag

Anthropogenic Vitreous Ferrous Silicate

Quartz Vein / Quartz Matrix

Silicon Dioxide (SiO2)

Bismuth Crystal

Bismuth (Bi)

Serpentinite

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

Lepidolite on Matrix

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