Man Made Object (Metalwork)

Rhodonite

Manganese Inosilicate (MnSiO3)

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Chert

Chert (microcrystalline quartz)

Tumbled green-brown stone, likely serpentine

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite

Aventurine

Quartz (Aventurine variety)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.

Chert (or Flint)

Chert (a cryptocrystalline variety of quartz, SiO2)

Red Jasper

Red Jasper (variety of Chalcedony, SiO₂)

Serpentine (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and chromite

Dyed blue howlite (turquoise imitation), possibly dyed magnesite

Howlite: Ca₂B₅SiO₉(OH)₅; the vivid blue color is artificial dye. Exact identification is uncertain from the photograph alone.

Blue sodalite beads

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite) that have been altered to limonite and then replaced by quartz

Jasper

Chalcedony (cryptocrystalline quartz), SiO2

Nephrite (a form of Jade)

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

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Coal (most likely Bituminous or Anthracite)

Coal (primarily composed of carbon with varying amounts of other elements)

White Jade / White Chalcedony

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)

Black-and-white jasper

Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions

Mixed polished gemstone bead lot, likely dyed agate and quartz

Chalcedony (microcrystalline quartz, SiO₂), with possible amethyst, aventurine, and other dyed quartz varieties

Turquoise cabochon

Turquoise — hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O

Smoky quartz (rough, water-worn crystal)

Quartz, silicon dioxide (SiO₂), smoky variety

Malachite

Malachite [Cu2CO3(OH)2]

Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')

Calcite (Calcium Carbonate, CaCO3)

Amazonite

Amazonite (KAlSi3O8) - a variety of Microcline Feldspar

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Calcite

Calcite (CaCO3)

Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)

Chert (microcrystalline quartz)

Amazonite

KAlSi3O8 (Potassium Feldspar, variety of Microcline)

Jade (Nephrite or Jadeite)

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

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

Jasper, microcrystalline quartz (SiO₂)

Larimar

Pectolite (a variety of pectolite, NaCa2Si3O8(OH))

Titanium Aura Quartz

Titanium-coated Silicon Dioxide (SiO2)

Titanium Coated Aura Quartz (Apple Aura Quartz)

Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating

Blue calcite

Calcite (CaCO₃), likely blue variety

Malachite

Copper Carbonate Hydroxide, Cu2CO3(OH)2

Marble

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

Chert / Flint

Chert (varieties include Flint)

Moldavite

Silica glass with small amounts of aluminum, iron, and other elements

Tiger’s eye

Quartz variety, primarily silicon dioxide (SiO₂); fibrous quartz pseudomorph after crocidolite asbestos

Bronzite

MgSiO3 (Enstatite with 10-30% FeSiO3 in solid solution)

Obsidian (in jewelry setting)

Volcanic Glass (Amorphous Silica)