Mineraloid (Man Made Glass)

United States Quarter Dollar

Cupronickel Clad Alloy (75% Copper, 25% Nickel over a 100% Copper core)

Cat's Eye Shell (Shiva Shell)

Operculum of the Turbo petholatus (Tapestry Turban Snail), predominantly Calcium Carbonate (Aragonite)

Red Jasper

Jasper (a variety of Chalcedony, SiO₂)

Amber

Succinite (specifically for Baltic amber); Approximate formula: C10H16O

Amber

Succinite (Resinite)

Baltic Amber (Butterscotch variety)

Succinite

Smoky Quartz

Smoky Quartz (SiO2)

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

BROWN GRANITE (likely 'Tan Brown' or similar)

Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)

Limonite (Iron Ore)

Hydrous Iron Oxide (goethite, lepidocrocite)

Mixed Gemstone Beaded Jewelry

Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)

Granite, possibly granodiorite

Coarse-grained felsic plutonic rock; chiefly quartz (SiO₂), potassium feldspar and plagioclase feldspar, with biotite and/or hornblende

Quartz

Silicon Dioxide (SiO₂)

Tumbled sodalite with white calcite veining

Sodalite, Na8(Al6Si6O24)Cl2, commonly intergrown with calcite, CaCO3

Granite Cobble/Pebble

Granite

Chert (or possibly Flint)

Chert (variant: Flint)

Jade (likely Nephrite Jade based on appearance)

Nephrite (a variety of actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Polymictic breccia, possibly volcanic breccia

Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals

Glazed Ceramic Tile

Fused Silicate-Clay composite

Green glassy slag or manufactured glass bead

Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral

Fossiliferous Limestone

Limestone (composed primarily of calcite with included fossils CaCO3)

Ambergris

Ambrein (C30H52O)

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Ambergris

Physeter macrocephalus excreta (Ambergris)

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Yellow Chalcedony (common opal or chert variant)

Silicon Dioxide (SiO2)

Amber

Succinite (fossilized tree resin)

White Jade (Nephrite)

Nephrite, Ca2(Mg,Fe)5Si8O22(OH)2

Clay (as a rock-forming material)

Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)

Jade (Nephrite or Jadeite)

Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)

Muscovite Schist

KAl2(AlSi3O10)(OH)2 (Muscovite) in Schist Matrix

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Gold

Aurum (Au)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Sea Glass (Frosted Glass Fragment)

Amorphous Silica (Anthropogenic Sediment)

Sand Grain (Quartz)

Silicon Dioxide (SiO2)

Chert (variant of Flint)

Chert (SiO2)