Mineral (Processed Alloy)

Cherry Creek Jasper (also known as Red Creek Jasper or Cherry Creek Agate)

Jasper, microcrystalline quartz (SiO₂)

Turquoise (beads)

Turquoise; CuAl6(PO4)4(OH)8·4H2O

Gneiss

Gneiss (High-grade regional metamorphic rock)

Sandstone

Sandstone (lithified arenite/wacke)

Peridot (Olivine)

Olivine ((Mg,Fe)2SiO4)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Gneiss

Gneiss (a metamorphic rock)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Quartzite

Quartzite (primarily composed of SiO O₂)

Granite

Granite (a common igneous rock)

Garnet (Almandine or Spessartine likely)

Garnet Group Minerals (e.g., Almandine Fe3Al2(SiO4)3, Pyrope Mg3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3)

Diamond

Carbon (C), specifically in an isometric crystal system.

Laterite (iron-rich nodule, possibly Bauxite as a subtype)

Laterite (composed of various minerals including goethite, hematite, gibbsite, etc.)

Gneiss

Gneiss (a type of metamorphic rock)

Banded Gneiss

Gneiss (pronounced "nice")

Jade (Nephrite or Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)

Green Glass Cullet / Recycled Glass

Amorphous Silicon Dioxide (SiO2) with various metal oxides

Basalt

Basalt (extrusive igneous rock)

Citrine

Quartz (SiO₂) variety

Conglomerate

Conglomerate (a clastic sedimentary rock)

Sandstone

Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Quartz (likely milky quartz or a stained variety)

Silicon Dioxide (SiO₂)

Pyrite

Pyrite (FeS2)

Unakite

Epidote-Feldspar rock

Mixed Gemstone Bracelet

Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)

Anthracite Coal

Anthracite (a variety of coal, predominantly carbon)

Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz

Quartz (SiO₂)

Aragonite (variety 'Flos Ferri')

Aragonite (CaCO3)

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

Diamond

Diamond (C)

Chalcedony

Chalcedony (SiO₂)

Strawberry Quartz

Quartz (SiO₂) with Goethite (α-FeO(OH)) and/or Lepidocrocite (γ-FeO(OH)) inclusions

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Rose quartz cabochon (probable)

Quartz, silicon dioxide (SiO₂); pink color typically caused by trace elements and microscopic inclusions

Pebble (likely Sandstone or Granitic Pebble)

Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)

Diamond

Diamond (carbon allotrope), C (chemical formula)

Brown Jasper

Jasper (a cryptocrystalline variety of Quartz, SiO2)

Granite Cobble/Pebble

Granite