Mineral (Native Element)

Iron-stained quartz-rich rock, possibly gold-bearing quartz

Quartz (SiO₂) with iron-oxide staining; possible limonite/goethite matrix

Turquoise

Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Gold Ore (in Quartz/Sulfide matrix)

Native Gold (Au) in Quartz (SiO2) and Pyrite (FeS2)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Sandstone (Nut-stone / Cup-stone artifact)

Quartz Arenite / Worked Sedimentary Rock

Petrified Wood

Silicified Wood (SiO2)

Native gold specimen (probable gold-bearing quartz)

Native gold, Au, with likely quartz (SiO₂) and possibly iron-oxide/sulfide matrix

Fossilized bone fragment, possibly vertebrate tooth or jaw

Mineralized vertebrate bone; commonly apatite [Ca5(PO4)3(F,OH,Cl)] replacing original bone

Amygdaloidal Basalt with Secondary Minerals

Basalt containing secondary mineralization (likely Chlorite, Celadonite, or Zeolites)

Gold Ore (in Quartz/Pyrite)

Native Gold (Au) with Quartz (SiO2) and Pyrite (FeS2)

Turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Native gold-bearing sulfide specimen

Native gold (Au), likely intergrown with pyrite (FeS₂) or chalcopyrite (CuFeS₂)

Polished quartz vein in iron-stained host rock

Quartz (SiO₂), likely with limonite/goethite and possible feldspathic or chalcedonic matrix

Weathered iron-rich rock, possibly limonite-bearing quartzite or altered basalt

Indeterminate; likely quartz (SiO₂) with iron oxides/hydroxides such as limonite/goethite

Quartz-rich gold-brown mineral specimen, possibly iron-stained quartz

Quartz (SiO₂), likely with limonite/goethite staining and minor sulfide or mica inclusions

Argillite

Argillite (Fine-grained sedimentary rock composed mostly of clay-sized particles)

Pyrite-bearing quartz (likely chalcopyrite/pyr ite specimen)

Pyrite, FeS₂, with quartz (SiO₂) and possibly chalcopyrite, CuFeS₂

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Pyrite-bearing metamorphic rock (likely schist or quartzite)

Pyrite (FeS₂) in a quartz-rich host rock, possibly mica schist

Metallic sulfide-rich rock, possibly pyrite-bearing schist or marcasite specimen

Likely pyrite (FeS₂) in a foliated host rock; exact identification requires testing

Weathered quartz-bearing rock, possibly iron-stained quartzite or granitic pegmatite

Indeterminate; likely quartz-rich silicate rock with iron-oxide staining (SiO₂-dominant)

Polished copper-bearing rock, likely cuprite-rich copper ore

Cuprite (Cu₂O) with native copper and iron-oxide matrix, probable

Aura Turquoise or Treated Turquoise Beads

Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O) with metallic coating

Raw gold nugget

Native gold (Au), possibly with minor quartz or silver

Gold-bearing quartz or iron-stained quartzite

Quartz (SiO₂), possibly with pyrite or native-gold flecks

Native gold-bearing rock (probable gold nugget/ore fragment)

Native gold, Au, associated with quartz and/or iron oxides

Gold Ore in Matrix

Native Gold (Au) in Quartz/Limonite host rock

Gold and Cubic Zirconia (San Judas Tadeo Pendant)

Native Gold (Au) with Synthetic Cubic Zirconia (ZrO2)

Turquoise (Likely Stabilized or Dyed Howlite/Magnesite)

CuAl6(PO4)4(OH)8·4H2O (if true turquoise), but likely dyed howlite Ca2B5SiO9(OH)5

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O

Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Rose Quartz

Silicon dioxide (SiO2)

Native Gold (in Jewelry form)

Gold (Au)

Native Gold (in the form of jewelry)

Gold (Au)

Weathered iron-rich rock, possibly laterite or limonite-bearing quartzite

Limonite/goethite mixture, commonly FeO(OH)·nH₂O, with possible quartz and iron oxides

Pyrite (iron pyrite), likely massive or granular specimen

Pyrite, FeS₂

Metallic sulfide-bearing ore, likely pyrite-rich rock

Pyrite (FeS₂), possibly mixed with quartz or other sulfides

Gold nugget or gold-bearing fragment

Native gold (Au), possibly gold-colored metal or coated material

Small metallic-gold mineral fragment, possibly pyrite

Pyrite (FeS₂), if confirmed

Pyrite specimen

Pyrite, FeS₂ (iron disulfide)

Agate (specifically a Thunderegg/Agate Nodule)

Cryptocrystalline Quartz (SiO2)