Man Made Material (Metal)

Green gemstone in a jewelry setting (possibly emerald or green glass)

Not identifiable from the image; if natural emerald, beryl (Be₃Al₂Si₆O₁₈)

Clear faceted gemstone in a gold-colored setting

Likely colorless quartz (rock crystal) or synthetic cubic zirconia; visual identification is inconclusive

Slag

Anthropogenic silicate slag

Green copper-bearing rock, likely chrysocolla-bearing quartz or host rock

Chrysocolla (Cu₂H₂Si₂O₅(OH)₄·nH₂O), possibly mixed with quartz and copper oxides

Polished blue calcite sphere (tentative identification)

Calcite, CaCO₃; blue color generally results from trace impurities or inclusions

Moissanite

Silicon Carbide (SiC)

Mica-rich metamorphic rock, likely schist

Quartz–mica schist; commonly quartz with muscovite and/or biotite mica

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Quartz-bearing Pegmatite with Metallic Sulfides

Pegmatite / Quartz-Feldspar Matrix with Pyrite and Mica

Slag (Industrial By-product)

Anthropogenic Vitreous Silica/Iron Silicate

Amber (likely a small polished amber piece)

Natural fossil resin; amber is an organic mineraloid, not a crystalline mineral. The image alone cannot confirm authenticity.

Tiny metallic mineral grain (possibly native silver or a metallic sulfide)

Undetermined from the photograph; native silver (Ag) is one possibility, but identification requires examination or testing

Faceted colorless gemstone, likely cubic zirconia or diamond

Cubic zirconia (zirconium dioxide, ZrO₂) or diamond (carbon, C)

Chert (likely flint)

Microcrystalline quartz, SiO₂

Pallasite Meteorite

Pallasite (ST-class)

Moss Agate

Chalcedony (SiO2) with inclusions of manganese or iron oxides

Turquoise bracelet

Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O

Blue gemstone ring, likely blue topaz or synthetic blue spinel

Likely topaz (Al₂SiO₄(F,OH)₂) or synthetic spinel (MgAl₂O₄); identification is uncertain from the image

Hematite Beads

Hematite (Fe2O3)

Synthetic Blue Aura Quartz

Silicon Dioxide (SiO2) with Metallic Infusion

Turquoise jewelry beads/earrings

Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; possibly reconstructed or imitation turquoise

Ruby (set in a ring; possibly synthetic or imitation)

Corundum, Al₂O₃; red color is typically caused by chromium

Carnelian cabochon earrings

Carnelian, a translucent orange variety of chalcedony (microcrystalline SiO₂)

Slate

Metamorphic Pelitic Rock

Blue gemstone in a decorative setting (possibly blue spinel or sapphire)

Unidentified blue faceted gemstone; sapphire is corundum (Al₂O₃), while spinel is MgAl₂O₄

Possible iron-rich meteorite fragment

Unidentified Fe–Ni meteoritic material; identification cannot be confirmed from this blurry image

Blue Goldstone

Aventurine Glass (SiO2 with Cobalt/Copper inclusions)

Clear quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Slag (Industrial Glass)

Artificial Vitreous Silicate

Polished amethyst-bearing quartz

Quartz, SiO₂; purple coloration from irradiation and trace iron

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Slag (Industrial Glass Slag)

Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)

Peridot (Olivine)

Olivine ((Mg, Fe)2SiO4)

Likely chrysocolla-bearing copper ore

Chrysocolla, a hydrated copper silicate; exact identification is uncertain from the small, blurry image

Green aventurine pendant

Quartz variety, SiO₂, colored mainly by fuchsite or other chromium-bearing mica inclusions

Green aventurine pendant (likely)

Quartz, SiO₂, with green fuchsite inclusions (aventurescent quartz)

Diamond (in a gold setting)

Carbon (C)

Granite

Felsic intrusive igneous rock

Gemstone stud earrings, likely set with clear stones

The stones may be diamond (carbon, C) or colorless cubic zirconia (ZrO₂); the image is insufficient to distinguish them.

Peridot ring

Gem-quality olivine, typically forsterite–fayalite solid solution ((Mg,Fe)₂SiO₄)

Color-change gemstone ring (stone possibly alexandrite or a synthetic imitation)

Undetermined from the image; alexandrite is chrysoberyl, BeAl₂O₄

Gemstone ring (stone appears pale yellow, possibly citrine or glass imitation)

Undetermined; possible quartz variety citrine (SiO₂)