Mineral (Refined Metal)

Beryl (var. Heliodor or Aquamarine)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)

Celestine (Celestite)

Strontium sulfate (SrSO4)

Granite

Granite (felsic intrusive igneous rock)

Iron-oxide-rich weathered rock

Limonite/goethite-bearing ironstone; chiefly hydrated iron oxides, often FeO(OH)·nH₂O

Aventurine

Quartz (SiO2) with inclusions of Fuchsite

Pegmatitic granite (likely feldspar–quartz–mica rock)

Coarse-grained granitic pegmatite; primarily quartz (SiO₂), feldspar, and mica, with possible epidote or chlorite

Pyrite in Quartz

FeS2 (Iron Pyrite) with SiO2 (Quartz)

Dark metallic sulfide specimen, possibly galena

Galena (lead sulfide, PbS), identification tentative

Milky Quartz with Iron Oxide Weathering

Silicon Dioxide (SiO2) with Goethite/Limonite coatings

Copper Ore

Mixed copper sulfides/oxides in gangue matrix

Lepidolite

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

Granite

Intrusive Igneous Rock

Blue-green crystal point, likely fluorite

Fluorite (CaF₂), tentative visual identification

Granite

Felsic intrusive igneous rock

Copper Ore (with Azurite and Malachite)

Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)

Chalcopyrite (Peacock Ore)

Copper Iron Sulfide (CuFeS2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Feldspar-Quartz Rock (likely Pegmatite or Granite)

Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Granite

Felsic intrusive igneous rock

Granite

Intrusive igneous rock primarily composed of quartz, alkali feldspar, and plagioclase

Galena

Lead(II) sulfide (PbS)

Cobalt Blue Glass / Cullet Glass

Silicon dioxide (Amorphous man-made glass)

Silver Nugget

Native Silver (Ag)

Gold Nugget

Native Gold (Au)

Opalite

Synthetic Opalized Glass

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Quartz Vein on Matrix

Silicon Dioxide (SiO2)

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Quartz Vein Rock

Quartz (Silicon Dioxide, SiO2)

Rounded river pebble, possibly iron-rich quartzite or basalt

Indeterminate from image; likely fine-grained basalt (mafic silicate rock) or ferruginous quartzite

Iron-stained Quartz (Gossan/Limonite-coated Quartz)

Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)

Sunstone

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

Blue slag glass / industrial glass fragment

Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag

Granite

Felsic intrusive igneous rock

Amygdaloidal Basalt

Basalt with secondary mineral infilling

Granite

Intrusive igneous rock

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix

Cubic Zirconia (Jewelry Setting)

Zirconium Dioxide (ZrO2)

Granite

Felsic intrusive igneous rock

Amethyst cabochon jewelry

Amethyst, purple variety of quartz (SiO₂)