Mineral (Native Element Alloy)

Diamond (in jewelry setting)

Cubic Carbon (C)

Vanadinite

Pb5(VO4)3Cl

Fluorite

Calcium Fluoride (CaF2)

Lepidolite in Pegmatite

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

Diamond (Cluster Ring)

Carbon (C)

Ruby (Corundum)

Aluminium oxide (Al2O3) with Chromium traces

Yellow Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2

Native Copper Nugget

Native Copper (Cu)

Silver

Ag (Native Silver)

Gold Nugget

Native Gold (Au)

Native Copper

Native Copper (Cu)

Lepidolite Pebble

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

Diamond

Carbon (C)

Diamond

Diamond (pure Carbon, C)

Rough Diamond

Diamond (pure Carbon, C)

Raw Diamond

Carbon (C)

Diamond (in a jewelry setting)

Cubic Carbon (C)

Lepidolite in Quartz Matrix

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

Aquamarine

Beryl (Be3Al2Si6O18 with Fe impurities)

Native Gold Nuggets

Native Gold (Au)

Stainless Steel (Polished)

Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)

Diamond in Gold Setting

Diamond (C - pure carbon)

Celestite

Celestine (SrSO4)

Mineral Sand (Heavy Mineral Sand Concentrate)

Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Diamond

C (Carbon)

Diamond

Carbon (C)

Diamond

Carbon (C)

Rough Diamond

Diamond (pure Carbon, C)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Sandstone (Quartzose Sandstone)

Arenite (SiO2 based)

Gold (Elemental Metal)

Gold (Au)

Gold Nugget

Gold (Au)

Lavender Quartz (appearing as beads) and Druzy Quartz

Silicon Dioxide (SiO2)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite

Cupronickel (on a 1981 Mexico 20 Pesos coin)

Copper-Nickel Alloy (Cu75Ni25)

Turquoise

Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O

Gold Nugget

Native Gold (Au)