Mineral With Artificial Coating

Orange Calcite with Siderite/Iron Oxide Coating

Calcium Carbonate (CaCO3)

Smoky Quartz

SiO2 (Silicon Dioxide)

Smoky Quartz

Smoky Quartz (SiO2)

Metal Alloy (Jewelry)

Not a naturally occurring rock or mineral; likely a metal alloy for jewelry. Possible compositions include sterling silver (92.5% silver, 7.5% copper), or other silver/gold alloys.

Slag (Industrial Byproduct)

Ferrous/Non-ferrous Silicate

Slag

Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)

Ironstone (with possible Hematite/Limonite coating)

Ironstone (Fe-rich sedimentary rock)

Citrine

Quartz (SiO₂)

Magnetite

Magnetite (Fe3O4)

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Pyrite

Iron Pyrite (FeS₂)

Sandstone (with possibly iron oxides and other minerals)

Sandstone

Ocean Jasper

Orbicular Jasper (variety of Chalcedony - SiO2)

Dyed Pink Agate

Silicon Dioxide (SiO2) with artificial dye

Blue Crackle Quartz (Dyed Quarzite)

Silicon Dioxide (SiO2) with artificial dye

Red Tiger's Eye beads

Tiger's Eye (variety of Chalcedony, SiO2)

Peridot and Citrine Gemstones (in a ring setting)

Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)

Blue Goldstone

Synthetic Avanturine Glass (or Aventurine Glass)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with various inclusions

Red Mudstone (Siltstone)

Lutite (primarily Quartz and Clay minerals with Hematite)

Citrine Geode (or Druzy Citrine)

Silicon Dioxide (SiO₂) - a variety of Quartz

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)

Orange Quartz with Hematite inclusions

Quartz (SiO2) with Hematite (Fe2O3) inclusions

Green Aventurine

Aventurine (a variety of Quartz, SiO2)

Talc

Talc (Mg₃Si₄O₁₀(OH)₂)

Calcite

Calcite (CaCO3)

Garnet (likely Almandine or a blend)

Garnet group: X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+. Given the dark, somewhat reddish-brown appearance in the image, it's likely Almandine (Fe3Al2(SiO4)3) or a mix with other iron-rich garnets.

Pebble (likely Sandstone or Granitic Pebble)

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

Goldstone

N/A (Synthetic Glass with Copper Inclusions)

Hypersthene (or Enstatite/Ferrosilite)

Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)

Geode with Quartz and possibly Jasper/Hematite

Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Amazonite (likely mixed with other feldspars/minerals)

Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.

Green Aventurine

Aventurine Quartz (SiO2 with fuchsite inclusions)

Siltstone with Quartz Vein

Siltstone (composed of Quartz and Clay minerals) with a hydrothermal Quartz vein (SiO2)

Milky Quartz

Quartz (SiO₂)

Cobaltoan Calcite / Pink Dolomite (Possible)

Cobaltoan Calcite: (Ca,Co)CO3; Pink Dolomite (or Thulite): CaMg(CO3)2 or Mn-Dolomite / (Thulite: Mn2+3Al2(Si2O7)(SiO4)O(OH))

Quartz Vein in Host Rock (often Granite or Schist)

Silicon Dioxide (SiO2) within host matrix

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).