Mineral (Metal)

Dyed Agate Slice

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Aventurine (Green)

Silicon Dioxide (Quartz variety) containing Fuchsite - SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Silicon

Element Si

Quartz crystal pendant (likely smoky quartz or iron-stained quartz)

Quartz, silicon dioxide (SiO₂)

Gold Nugget

Native Gold (Au)

Turquoise jewelry setting

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Opalite (Man-made Glass)

Synthetic Opalised Glass

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Diamond (in a metal ring setting)

Diamond (Pure Carbon, C)

Decorated turquoise-like bead or mineral pendant

Likely turquoise [CuAl₆(PO₄)₄(OH)₈·4H₂O], possibly dyed composite or blue-green jasper

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within metamorphic/igneous matrix

Limonite with Quartz

FeO(OH)·nH2O (Limonite) with SiO2 (Quartz)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

Quartz-rich breccia or quartz vein fragment

Silica, primarily quartz (SiO₂), with possible chlorite, feldspar, or iron-oxide inclusions

Polished brecciated jasper pendant

Jasper, an opaque microcrystalline variety of chalcedony (mostly SiO₂), with iron-oxide staining and likely brecciation

Clear quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Possible weathered metal-rich rock or slag fragment

Uncertain; possibly iron-oxide-rich breccia or industrial slag

Polished mica-rich metamorphic sphere

Likely mica schist or garnet-mica schist; exact identification is uncertain from the photograph

Polished chalcedony (likely moss or dendritic agate)

Microcrystalline quartz, SiO₂, with iron/manganese oxide inclusions

Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

Gold Ore in Quartz

Auriferous Quartz (Au + SiO2)

Granite

Phaneritic Felsic Igneous Rock

Granite

Intrusive Igneous Rock

Granite

Intrusive Igneous Rock (Felsic)

Granite

Felsic intrusive igneous rock

Weathered biotite-rich schist

Mica schist, chiefly quartz + biotite/muscovite; possibly garnet-bearing

Quartz Vein in Host Rock (Gabbro or Basalt)

Silicon Dioxide (SiO2) with Mafic Silicates

Gossan (Iron Hat)

Limonitic Gossan (Fe-oxide/hydroxide complex)

Granite

Phaneritic Felsic Igneous Rock

Granite

Felsic intrusive igneous rock

Diamond Plate (Steel)

Alloyed Carbon Steel or Aluminum with 'Durbar' pattern

Sandstone

Arenite (primarily Quartz, SiO2)

Cubic Zirconia

Cubic Zirconia (Zirconium Dioxide, ZrO2)

Diamond (Cut Gemstones in Jewelry)

Carbon (C)

Iron-stained quartz rock

Quartz (SiO₂), likely ferruginous quartz or quartz-rich breccia

Milky Quartz

Quartz (Silicon Dioxide) - SiO2

Milky Quartz

Silicon Dioxide (SiO2)

Limonite and Goethite encrusted Quartz (Iron-stained Gossan)

FeO(OH)·nH2O (Limonite) / FeO(OH) (Goethite) on SiO2 (Quartz)

Gold bullion bars

Native gold (Au), likely cast or refined metal

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Granite

Intrusive Igneous Rock

Diamond ring

Diamond, crystalline carbon (C), set in a metal ring