Mineral (Native Element)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Sunstone

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

Thunderegg

Agate-filled Rhyolitic Nodule (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Amygdaloidal Basalt

Amygdaloidal Mafic Volcanic Rock (Basalt)

Native Copper in Basalt

Cu (Native Copper) in Mafic Igneous Rock

Graphite

Graphite (Native Carbon, C)

Copper slag or vesicular basalt with copper minerals

Industrial slag / Basaltic matrix with secondary copper minerals

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Yellow Jasper

Silicon Dioxide (SiO2) with goethite or limonite inclusions

Weathered quartz-rich rock, likely granite or pegmatite

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica, with possible iron-oxide staining

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

Chert (variously known as Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Copper-bearing rock, likely native copper in a matrix

Native copper (Cu), possibly with cuprite/malachite in a basaltic or porphyritic matrix

Thunderegg (Agate or Quartz Geode)

Silica-filled rhyolitic nodule (SiO2)

Moqui Marble (Ironstone Concretion)

Iron Oxide Concretion (Fe2O3)

Yellow Jasper

Silicon Dioxide with Limonite/Goethite inclusions (SiO2)

Pink quartz (likely rose quartz)

Quartz, silicon dioxide (SiO₂), typically massive rose quartz colored by trace elements and microscopic inclusions

Diamond

Diamond (Pure Carbon, C)

Rough Diamond

Diamond (Pure Carbon: C)

Aura Druzy Agate (Star Shape)

Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating

Tumbled pale-green quartz, likely prasiolite or green aventurine

Quartz (SiO₂), with minor iron- or other mineral-related coloring

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Pink Lepidolite

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

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Copper-bearing rock, likely oxidized native copper ore

Native copper (Cu) with copper-oxide/carbonate minerals, possibly chrysocolla, malachite, and cuprite in a limonitic host

Malachite

Malachite (Cu₂CO₃(OH)₂), a copper carbonate hydroxide

Bismuth

Bismuth (Bi)

Likely ironstone or iron-oxide–stained pebble

Iron-rich concretion, probably goethite/limonite (FeO(OH)·nH₂O) coating a rock fragment

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Turquoise

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

Amygdaloidal Basalt

Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)

Gold-bearing quartz or iron-stained sulfide specimen

Native gold (Au), possibly in quartz with limonite/goethite and sulfide remnants

Turquoise (with Hematite)

CuAl6(PO4)4(OH)8·4H2O

Turquoise (possible Howlite imitation)

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

Turquoise (Dyed Howlite or Magnesite imitation)

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

Gold-bearing quartz vein rock

Quartz (SiO₂) with probable native gold and iron-oxide/sulfide minerals

Turquoise

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

Turquoise and Red Coral (with Grizzly Bear Claw)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Precious Coral (Corallium rubrum)

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Pyrite-bearing rock, likely quartz vein

Pyrite (FeS₂) in quartz-rich host rock