Mineral (Refined Metal)

Granite

Felsic intrusive igneous rock

Quartz vein in dark metamorphic rock

Likely quartz-rich vein cutting a biotite- or amphibole-rich metamorphic host; exact host rock cannot be confirmed from the image

Milky or Iron-Stained Quartz

Quartz (Silicon Dioxide, SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Milky Quartz

Silicon Dioxide (SiO2)

Zircon

Zircon (Zirconium Silicate, ZrSiO4)

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Granite

Felsic intrusive igneous rock

Likely weathered basalt with iron-oxide alteration

Basalt (fine-grained mafic volcanic rock), chiefly plagioclase and pyroxene with altered iron-bearing minerals

Green Aura Quartz

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating

Blue-green agate bead bracelet

Chalcedony (microcrystalline quartz, SiO₂), likely dyed blue-green

Quartz crystal pendant

Quartz (silicon dioxide, SiO₂), likely rock crystal or milky quartz

Diamond jewelry pendant or cluster

Diamond, crystalline carbon (C), likely mounted in metal

Native gold nugget or flake

Native gold (Au), possibly with minor silver/electrum

Sunstone

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Granite

Intrusive Igneous Rock

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Granite Boulder

Felsic Intrusive Igneous Rock

Likely quartz-rich igneous pebble

Uncertain; possibly granite or quartz-bearing pegmatite

Metallic sulfide ore, possibly pyrite-rich

Pyrite (FeS₂), potentially mixed with chalcopyrite, galena, or iron oxides

Granite

Granite (Intrusive Igneous Rock)

Galena-rich sulfide specimen

Galena (lead sulfide, PbS), possibly with sphalerite or other sulfides

Native silver (likely)

Silver, Ag; possibly silver-bearing sulfide or mica contamination

Gold Flakes

Native Gold (Au)

Iron-rich sandstone (Gozan/Ironstone)

Ferruginous Sandstone (clastic sedimentary rock)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 inclusions)

Lepidolite

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

Aura Quartz / Rainbow Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Granite / Pegmatite with Quartz Vein

Granite (composed mainly of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)

Granite

Granite

Turquoise-and-coral silver jewelry brooch

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; red cabochons appear to be coral, likely set in silver

Pink Lepidolite

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

Milky Quartz

Silicon Dioxide (SiO2)

Olivine (Peridot Stone)

(Mg, Fe)2SiO4 (Magnesium Iron Silicate)

Milky Quartz

Silicon Dioxide (SiO2)

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Mixed gemstone jewelry collection

Various gemstone minerals, including likely amethyst (quartz), sapphire or iolite, garnet, pearl, turquoise, and colored beryl or tourmaline

Gold-bearing Quartz Vein in Mafic Rock

Hydrothermal Quartz Vein within Greenschist/Amphibolite facies (SiO2 with Au)

Lepidolite on Quartz

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz)

Granite

Intrusive Igneous Rock

Quartz–feldspar pegmatite fragment

Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with possible mica/amphibole

Celestite (Celestine)

Strontium Sulfate (SrSO4)