Mineral (Native Element Alloy)

Silver (Jewelry Specimen)

Native Silver (Chemical Formula: Ag)

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Native Copper

Native Copper (Cu)

Gold (10K Alloy)

Aurum (Au) with alloying metals (Cu, Ag, Zn)

Gold Nugget

Native Gold (Au)

Diamond

Native Carbon (C)

Bismuth Crystal

Bismuth (Bi)

Native Copper

Native Copper (Cu)

Gold Nugget

Native Gold (Au)

Silver (Native Element)

Ag (Argentum)

Diamond

Native Carbon (C)

Diamond

Native Carbon (C)

Diamond

Native Carbon (C)

Rough Diamond

Diamond (Native Element Carbon, C)

Silicon

Crystalline Silicon (Si)

Bismuth

Native Bismuth (Bi)

Gold Nugget

Native Gold (Au)

Native copper nugget

Native copper (Cu)

Native Copper

Copper (Cu)

Native Copper with Malachite and Chrysocolla

Native Copper (Cu) with Malachite [Cu2CO3(OH)2] and Chrysocolla [(Cu,Al)2H2Si2O5(OH)4·nH2O]

Michigan Float Copper

Native Copper (Cu)

Copper Ore

Native Copper (Cu) often found with Chalcocite (Cu2S) or Bornite (Cu5FeS4)

Gold Nugget

Native Gold (Au)

Blue Celestite

Celestine (Strontium Sulfate, SrSO4)

Gold Nuggests

Native Gold (Au)

Standing Liberty Quarter (Silver Specimen)

Native Silver alloy (Ag with Cu traces)

Copper

Native Copper (Cu)

Native Sulfur

Sulfur (S)

Native Copper

Native Copper (Cu)

Silver (Sterling Silver Jewelry)

Argentum (Ag) mixed with Copper (Cu)

Gold Nugget

Native Gold (Au)

Silver (Native or Alloyed)

Ag (Argentum)

Native Gold Nugget

Native Gold (Au)

Silver (Sterling Silver)

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

Copper Nugget

Native Copper (Cu)

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2)

Native Copper (in coinage alloy)

Copper (Cu)

Native Copper

Native Copper (Cu)

Rough Diamond

Diamond (Carbon, C)

Bismuth

Bismuth (Bi)

Native Copper

Native Copper (Cu)

Gold Nugget

Native Gold (Au)