Mineral (Native Element)

Diamond

Natural Diamond (Carbon, C)

Diamond (in jewelry setting)

Cubic Carbon (C)

Diamond (in Jewelry)

Carbon (C)

Native Gold in Quartz Host

Hydrothermal Gold (Au) in Quartz (SiO2)

Native gold in quartz matrix

Native gold (Au), with quartz (SiO₂) and possibly sulfide minerals

Yellow Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2

Turquoise (Rough)

CuAl6(PO4)4(OH)8·4H2O

Celestite

Celestine (SrSO4)

Gold Nugget

Native Gold (Au)

Diamond (or Diamond Simulant)

Native Carbon (C)

Pegmatite

Igneous Pegmatite (felsic intrusive rock)

Graphite-rich schist (probable)

Graphite schist; primarily graphite (C) with mica and quartz

Diamond (Cluster Ring)

Carbon (C)

Ruby (Corundum)

Aluminium oxide (Al2O3) with Chromium traces

Pink Tourmaline (Rubellite) in Lepidolite

Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4) in Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Gold Nugget

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Small brown mineral/rock fragment

Indeterminate; possibly weathered quartz-rich rock, ironstone, or a sulfide mineral

Small metallic mineral fragment

Unidentified metallic sulfide or native-metal fragment

Turquoise

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

Diamond

Diamond (pure Carbon, C)

Rough Diamond

Diamond (pure Carbon, C)

Diamond

Carbon (C)

Lepidolite Pebble

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

Raw Diamond

Carbon (C)

Silicon

Crystalline Silicon (Si)

Diamond (in a jewelry setting)

Cubic Carbon (C)

Native copper nugget

Copper (Cu), commonly with cuprite and copper-oxide alteration

Ruby

Corundum (Al2O3)

Nugget of Native Silver

Native Silver (Ag)

Gold Nugget

Native Gold (Au)

Gold-bearing Quartz

Native Gold (Au) in Quartz (SiO2) matrix

Gold Nugget

Native Gold (Au)

Aquamarine

Beryl (Be3Al2Si6O18 with trace Fe2+)

Celestine (Celestite)

Strontium sulfate (SrSO4)

Copper (native copper)

Native copper, Cu

Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold Flakes

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Gold

Native Gold (Au)

Gold Nugget Cluster

Native Gold (Au)