Man Made Object (Metalwork)

Obsidian

Obsidian (volcanic glass)

Brecciated jasper, possibly rainforest jasper

Jasper: microcrystalline to cryptocrystalline quartz, SiO₂, commonly containing hematite, goethite, chlorite, epidote, and other iron- and manganese-bearing minerals

Iron Meteorite

Iron-nickel alloy (primarily kamacite and taenite)

Iron Meteorite

Iron-nickel alloy (e.g., Kamacite, Taenite)

Red Jasper (with Quartz Veins)

Jasper (var. chert, SiO₂)

Red Swirl Beads (Likely Resin or Glass, simulating Red Jasper or Agate)

N/A (for the beads as pictured); Red Jasper: SiO2 (Chert variety); Red Agate: SiO2 (Chalcedony variety)

Asphalt

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

Nephrite Jade

Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Hematite

Hematite (Fe2O3)

Clay (as a rock-forming material)

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

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Likely serpentine (serpentinite) pebbles

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals

Blue chalcedony cabochon (probable)

Chalcedony, cryptocrystalline quartz; silicon dioxide (SiO₂)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Agate (or Chalcedony)

SiO2 (Silicon Dioxide) - a cryptocrystalline variety of quartz

Agate

Chalcedony (cryptocrystalline quartz)

Citrine

Quartz (SiO2) - specifically, a variety of macrocrystalline quartz

Unakite

Unakite (epidote-bearing altered granite; mainly pink potassium feldspar, green epidote, and quartz)

Turquoise cabochon

Turquoise; hydrated copper–aluminum phosphate, approximately CuAl6(PO4)4(OH)8·4H2O (composition varies)

Red Coral

Corallium rubrum (for precious red coral), although other species like Corallium japonicum and Paracorallium are also used.

Red Chalcedony (likely dyed)

Chalcedony (a variety of Quartz), SiO2

Smoky Quartz

SiO2 (Silicon Dioxide)

Tiger's Eye

Tiger's Eye (a variety of Quartz, SiO₂)

Jade (likely Nephrite or Jadeite)

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

Orange Calcite (likely polished specimen)

Calcite

Leopard Skin Jasper

Chalcedony (cryptocrystalline Quartz)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with included minerals (Fuchsite for green)

Unakite

Epidote-Feldspar rock

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Serpentine

Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)

Green Calcite

Calcite (CaCO3)

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Quartz (River-worn Pebble)

Quartz (SiO2)

Gold

Aurum (Au)

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with various inclusions

Rhodonite

Rhodonite (MnSiO3)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Brown Jasper (Likely)

Jasper (Cryptocrystalline Silicon Dioxide - SiO2)

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is cryptocrystalline quartz). Chemical Formula: SiO2 with inclusions of crocidolite fibers.