Mineral (Native Element Alloy)

Lepidolite

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

Crocoite

Lead chromate (PbCrO4)

Turquoise (Rough)

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Celestite

Celestine (SrSO4)

Gold Nugget

Native Gold (Au)

Diamond

Diamond (pure Carbon, C)

Arfvedsonite

Arfvedsonite [Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2]

Diamond

Diamond (Pure Carbon, C)

Iron Meteorite

Siderite (Iron-Nickel Alloy)

Native Gold

Native Gold (Au)

Native Copper

Native Copper (Cu)

Spiny Oyster Shell

Spondylus (Calcium Carbonate, CaCO3)

Pegmatite

Igneous Pegmatite (Granitic Composition)

Sulfur

Native Sulfur (S8)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Gold Nugget (Placer Gold)

Native Gold (Au)

Honey Calcite

Calcium Carbonate (CaCO3)

Gold Nugget

Native Gold (Au)

Gold Nugget / Gold-bearing Quartz

Native Gold (Au)

Copper and Quartz beads

Native Copper (Cu) and Crystalline Quartz (SiO2)

Diamond (in jewelry setting)

Carbon (C)

Diamond (in jewelry setting)

Adamantine Carbon (C)

Fuchsite

Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2

Pallasite Meteorite

Pallasite (ST-class)

Chrysocolla in Cuprite / Mixed Copper Ore

Hydrated copper silicate and copper(I) oxide, (Cu,Al)2H2Si2O5(OH)4·nH2O and Cu2O

Limestone with Lichen/Algae

Sedimentary Calcium Carbonate (CaCO3)

Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Ruby

Corundum (Al2O3 with Chromium traces)

White Sapphire

Corundum (Al2O3)

Diamond

Diamond (pure carbon, C)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Desert Rose

Gypsum rosette (Hydrous calcium sulfate, CaSO4·2H2O)

Native Gold in Quartz Host

Hydrothermal Gold (Au) in Quartz (SiO2)

Pink quartz crystal, possibly rose quartz

Quartz (silicon dioxide, SiO₂), likely pink quartz/rose quartz

Rough Diamond

Carbon (C)

Diamond (specifically Blue Diamond color appearance)

Carbon (C) with trace Boron

Diamond

Diamond (pure Carbon, C)

Milky Quartz

Silicon dioxide (SiO2)

Native Copper in Basalt

Cu

Gold

Native Gold (Au)