Mineral (Native Element)

Diamond

Carbon (C)

Diamond

Diamond (pure carbon C)

Diamond

Carbon (C)

Diamond (in jewelry setting)

Diamond (C - Carbon)

Pegmatitic granite

Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica

Sulfur (native sulfur)

Native sulfur, S₈

Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite

Diamond (or Diamond Simulant)

Carbon (C)

Pegmatite

Igneous Pegmatite (Granitic Composition)

Celestite

Celestine (SrSO4)

Quartz–feldspar pegmatite

Granitic pegmatite, chiefly quartz (SiO₂), feldspar, and mica

Diamond (faceted)

Diamond (Pure Carbon, C)

Native Copper

Native Copper (Cu)

Beryl (Aquamarine) in Matrix with Schorl

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

Native Copper

Native Copper (Cu)

Native Copper (Penny specimen)

Native Copper (Cu)

Weathered fossil shell or crinoid fragment

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

Crocoite

Lead chromate (PbCrO4)

Gold

Aurum (Elemental Gold, Au)

Native Copper Nugget

Native Copper (Cu)

Diamond

Carbon (C)

Diamond

Carbon (C)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)

Native gold (small nugget or grain)

Native gold, Au

Pearl

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

Honey Calcite

Calcium Carbonate (CaCO3)

Diamond (Cut Gemstone)

Carbon (C)

Native copper

Copper (Cu), commonly with cuprite and malachite alteration

Diamond (in Gold Jewelry)

Carbon (C)

Diamond (faceted)

Diamond (Pure Carbon, C)

Diamond

Carbon (C)

Native Copper

Native Copper (Cu)

Ruby

Corundum (Al2O3 with Chromium traces)

White Sapphire

Corundum (Al2O3)

Silver

Ag (Native Silver)

Quartz-rich pegmatite

Granitic pegmatite, chiefly quartz (SiO₂), feldspar, and mica

Fossilized bone fragment, possibly vertebra

Fossil bone (mineralized hydroxyapatite; exact taxon indeterminate)

Native Copper

Native Copper (Cu)

Pegmatitic quartz–feldspar rock with dark mica or garnet

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and biotite/muscovite, possibly garnet