Mineral (Native Element Alloy)

Gold Nugget

Native Gold (Au)

Gold flakes

Native Gold (Au)

Diamond

Carbon (C)

Diamond

Diamond (pure carbon C)

Diamond

Carbon (C)

Diamond (in jewelry setting)

Diamond (C - Carbon)

Gold Nugget

Native Gold (Au)

Native Copper

Native Copper (Cu)

Native Copper

Native Copper (Cu)

Celestite Geode

Strontium Sulfate (SrSO4)

Celestine (or Celestite) on Matrix

Celestine (SrSO4)

Diamond (or Diamond Simulant)

Carbon (C)

Rounded greenish-gold rock or mineral pebble

Indeterminate; possibly serpentine-rich stone, weathered sulfide, or iron-stained metamorphic rock

Native Copper (Penny specimen)

Native Copper (Cu)

Pearl

Calcium Carbonate (Aragonite/Calcite) with Conchiolin (CaCO3)

Diamond (faceted)

Diamond (Pure Carbon, C)

Native Copper Nugget

Native Copper (Cu)

Beryl (Aquamarine) in Matrix with Schorl

Be3Al2Si6O18 (Beryl) with NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)

Weathered fossil shell or crinoid fragment

Likely fossilized echinoderm or bivalve fragment; exact taxon indeterminate from the image

Gold Nugget

Native Gold (Au)

Native Copper

Native Copper (Cu)

Turquoise (Rough)

CuAl6(PO4)4(OH)8·4H2O

Lepidolite

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

Native Gold Nuggets

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.

Diamond

Carbon (C)

Diamond

Carbon (C)

Diamond (Cut Gemstone)

Carbon (C)

Vanadinite

Pb5(VO4)3Cl

Gold Nugget

Native Gold (Au)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic volcanic rock)

Silver

Ag (Native Silver)

Bismuthinite with Chalcopyrite and Quartz

Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)

Gold Nugget

Native Gold (Au)

Quartz-rich pegmatite (likely feldspar–quartz rock)

Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with possible mica/iron-oxide staining

Small metallic mineral fragment

Unidentified metallic sulfide or native-metal fragment

Malachite

Copper Carbonate Hydroxide, Cu2CO3(OH)2

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Diamond (in Gold Jewelry)

Carbon (C)

Diamond (faceted)

Diamond (Pure Carbon, C)

Diamond

Carbon (C)