Mineral (Native Element Alloy)

Rose Gold (Copper-Gold Alloy)

Aurum-Cuprum Alloy (Au-Cu)

Native Copper (Tumbled Nugget)

Cu (Native Element)

Silicon

Element Si

Silver (Native Element)

Ag (Native Silver), with minor Copper (Cu)

Native copper nugget

Copper (Cu), native element

Silver (Native Element)

Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen

Silver (Native Element / Alloy)

Silver (Ag)

Silver (S925)

Native Silver (Ag)

Silver (Native Element)

Silver (Ag) in an alloy of 90% Silver and 10% Copper

Native Silver

Silver (Ag)

Bismuth Crystal

Bismuth (element symbol Bi, atomic number 83)

Native bismuth

Bismuth (Bi), commonly forming hopper crystals or aggregates

Native bismuth

Bismuth (Bi), commonly with a naturally oxidized surface

Silicon (Industrial Grade)

Elemental Silicon (Si)

Silicon

Silicon (Si)

Bismuth

Bismuth (Bi)

Silver (Jewelry Specimen)

Native Silver (Ag)

Silver (Native Silver/Alloy Specimen)

Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy

Diamond

Carbon (C)

Native Copper

Copper (Cu)

Gold

Gold (Native Element); Au

Diamond (or Cubic Zirconia imitation)

Carbon (C) - Native Element

Diamond (or Diamond Simulant)

Carbon (C) - Native Element

Diamond (or high-quality simulant like Cubic Zirconia)

Carbon (C) - Native Element

Diamond

Carbon (C), Native Element

Diamond

Carbon (C) - Native Element

Rough Diamond (Bort)

Diamond (C)

Native Copper

Copper (Cu)

Silicon

Element Si

Gold Nugget / Gold Flakes

Native Gold (Au)

Silver Nuggets (Natural or Cast)

Native Silver (Ag)

Diamond

Native Carbon (C)

Gold Nugget

Native Gold (Au)

Diamond

Native Carbon (C)

Native gold (small nugget or grain)

Native gold, Au

Bismuth

Bismuth (Bi)

Gold Grain

Native Gold (Au)

Diamond

Native Carbon (C)

Gold and Silver (Metal Components of an Antique Pocket Watch)

Native Gold (Au) and Native Silver (Ag)

Silver (Jewelry Specimen)

Native Silver (Chemical Formula: Ag)

Diamond

Native Carbon (C)

Silver (Jewelry form)

Native Silver (Ag)