Mineral (Native Element)

Gold Nugget

Native Gold (Au)

Gold

Native Gold (Au)

Gold Nugget

Native Gold (Au)

Quartz-rich pegmatitic rock (likely milky quartz with feldspar and dark mica)

Pegmatite; predominantly quartz (SiO₂), with feldspar and biotite/hornblende

Lepidolite

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

Lepidolite on Pegmatite

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

Purple fluorite-bearing mineral specimen

Fluorite (calcium fluoride, CaF₂), possibly with quartz or chalcedony matrix

Rough Diamond

Diamond (pure Carbon, C)

Fossilized Bone Fragment

Permineralized Skeletal Element (Likely Vertebrate)

Quartz-rich pegmatitic rock, possibly milky quartz with mica

Pegmatite dominated by quartz (SiO₂), with probable muscovite mica and feldspar

Amygdaloidal Basalt

Basalt with secondary mineral infilling

Mica-rich pegmatite, likely muscovite with quartz and feldspar

Granitic pegmatite; predominantly muscovite mica (KAl₂(AlSi₃O₁₀)(OH)₂), with quartz (SiO₂) and feldspar

Diamond in Kimberlite

Diamond in Kimberlite Matrix (Diamond: C, Kimberlite: complex Potassic Peridotite)

Lepidolite

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

Quartz-rich pegmatite with mica

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

Gold Nugget

Gold (Au)

Rainbow fluorite

Fluorite (calcium fluoride, CaF₂)

Turquoise

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

Diamond

Diamond (pure Carbon, C)

Arfvedsonite

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

Diamond

Diamond (Pure Carbon, C)

Turquoise

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

Chrysocolla-bearing copper ore

Chrysocolla (hydrated copper aluminum silicate), likely with malachite/azurite and copper sulfides

Sandstone (Quartzose Sandstone)

Arenite (SiO2 based)

Gold Ore in Quartz/Schist

Auriferous Quartz and Sulfide-bearing Schist

Gold-bearing quartz or iron-stained quartz

Quartz (SiO₂), possibly with native gold and iron-oxide minerals

Lavender Quartz (appearing as beads) and Druzy Quartz

Silicon Dioxide (SiO2)

Diamond

Native Carbon (C)

Gold and Silver (in jewelry form)

Gold (Au) and Silver (Ag)

Limestone with Lichen/Algae

Sedimentary Calcium Carbonate (CaCO3)

Diamond (in jewelry setting)

Carbon (C)

Diamond (in jewelry setting)

Adamantine Carbon (C)

Fuchsite

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

Blue Quartz

Silicon Dioxide (SiO2) with fibrous inclusions (such as tourmaline, magnesio-riebbeckite, or crocidolite)

Blue Celestine

Celestine (SrSO4)

Quartz-bearing feldspar pegmatite (likely with mica/tourmaline)

Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with dark mica or tourmaline

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)

Sunstone

Plagioclase Feldspar (Na,Ca)(Si,Al)3O8

Pegmatitic granite (likely feldspar–quartz–mica rock)

Granitic pegmatite; chiefly K-feldspar and quartz, with mica and iron-oxide staining

Quartz-rich pegmatite specimen

Pegmatite, composed mainly of quartz (SiO₂), with probable feldspar and mica

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Native copper nugget

Copper (Cu), often with cuprite or copper-oxide surface