Mineral (Native Element)

Native gold nugget

Gold (Au), likely with minor silver/electrum

Native Gold Flake

Gold (Au)

Native Gold Nugget

Gold (Au)

Native Gold (in Jewelry)

Gold (Au)

Schist (likely mica schist)

Mica schist, commonly quartz–muscovite/biotite schist

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Gold (10K Alloy)

Aurum (Au) with alloying metals (Cu, Ag, Zn)

Diamond

Carbon (C)

Iron-rich weathered rock, likely limonite-bearing basalt or ironstone

Fine-grained mafic rock with iron oxides/hydroxides; probable basalt altered to limonite/goethite

Gold-bearing quartz (probable sulfide-bearing quartz)

Quartz, SiO₂, with possible pyrite or mica inclusions

Malachite specimen

Malachite, Cu₂CO₃(OH)₂

Tumbled amethyst

Amethyst, purple quartz (SiO₂)

Diamond

Carbon (C)

Turquoise

CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)

Turquoise (Green variety)

Hydrous phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O

Turquoise (possible Dyed Magnesite/Howlite)

CuAl6(PO4)4(OH)8·4H2O

Diamond

Carbon (C)

Gold bullion bars

Native gold (Au), likely cast or refined metal

Native gold-bearing quartz/rock fragment

Native gold (Au), likely in quartz or iron-oxide matrix

Weathered gold-bearing quartz/ironstone (possible gold nugget)

Native gold (Au), if metallic gold is present, in quartz–iron-oxide matrix

Bismuth Crystal

Bismuth (Bi)

Quartz (specifically Milky Quartz or Quartzite)

Silicon Dioxide (SiO2)

Quartz-rich gold-bearing rock (possible quartz vein ore)

Hydrothermal quartz vein; predominantly SiO₂, with possible iron oxides/sulfides and minor native gold

Weathered quartz-rich rock, possibly gold-bearing quartz

Milky quartz with iron-oxide staining; exact host rock is uncertain from the image

Malachite-rich copper ore

Malachite, Cu₂CO₃(OH)₂, likely with chrysocolla and oxidized copper minerals

Pyrite-bearing quartz vein fragment

Quartz (SiO₂) with pyrite (FeS₂), possibly minor chalcopyrite

Red Jasper

Silicon dioxide (SiO2) with Iron inclusions

Agate (Thunderegg segment)

Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony

Turquoise

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

Native gold-bearing quartz vein specimen

Native gold (Au) in quartz, with possible iron-oxide and sulfide minerals

Rose quartz (likely)

Quartz, silicon dioxide (SiO₂), commonly massive rather than visibly crystalline

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Unidentified dark, foliated metamorphic rock

Likely biotite schist or hornblende-bearing gneiss; exact identification requires testing

Sulfur on Aragonite

Sulfur (S) on Aragonite (CaCO3)

Gold-Bearing Quartz

Silicon Dioxide with Native Gold (SiO2 + Au)

Celestite (Celestine)

Strontium sulfate (SrSO4)

Native gold specimen

Native gold (Au), likely with quartz or sulfide matrix

Azurite with native copper

Azurite (Cu₃(CO₃)₂(OH)₂) with native copper (Cu)

Native gold nuggets

Gold (Au), usually with minor silver and copper

Silver (Native or Alloyed)

Ag (Argentum)

Jasper

Silicon dioxide (SiO2) with iron impurities