Sedimentary (Imitation)

Yellow amber

Amber; fossilized plant resin, commonly succinite (not a mineral)

Diamond cluster ring (likely jewelry setting)

Diamond, crystalline carbon (C), cubic crystal system

Green cabochon gemstone, likely aventurine or dyed chalcedony

Indeterminate from image; possible quartz variety (SiO₂), including aventurine quartz or chalcedony

Green aventurine bead necklace

Aventurine quartz, predominantly SiO₂ with green color commonly from fuchsite mica inclusions

Jade (likely jadeite) pearl earring

Jadeite, NaAlSi₂O₆; the image alone cannot distinguish jadeite from nephrite

Green aventurine pendant (likely)

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

Polished carnelian (red-orange chalcedony)

Carnelian, a cryptocrystalline variety of quartz (SiO₂), commonly colored by iron oxides

Red/orange chalcedony (carnelian), possibly dyed or heat-treated

Chalcedony, cryptocrystalline SiO₂ (quartz variety)

Polished green jasper cabochon (likely serpentine or nephrite imitation)

Jasper: microcrystalline quartz (SiO₂); green coloration may reflect chlorite, epidote, or iron minerals

Turquoise (Dyed Howlite/Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Target mineral) / Ca2B5SiO9(OH)5 (Actual specimen: Howlite)

Uncut diamond (likely gemstone)

Diamond — crystalline carbon, C

Pearls (likely freshwater cultured pearls)

Pearl: nacre, primarily aragonite (CaCO₃) with conchiolin

Howlite (Dyed Turquoise)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Turquoise cabochon (likely stabilized or imitation)

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

Turquoise (Blue Howlite / Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)

Red cabochon gemstone, likely carnelian or red agate

Cryptocrystalline quartz (chalcedony), SiO₂

Tumbled banded agate (likely carnelian or sardonyx)

Microcrystalline quartz, SiO₂ (chalcedony with iron-oxide banding)

Polished carnelian (likely)

Carnelian, orange-red chalcedony; microcrystalline quartz (SiO₂)

Strawberry Quartz and Rose Quartz

Silicon Dioxide (SiO2) with inclusions

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Anthracite Coal

Anthracite (Carbon Content: 86%–98%)

Green cabochon gemstone, likely nephrite jade

Nephrite jade—interlocking amphibole fibers, chiefly tremolite-actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Amethyst (faceted gemstone)

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron-related defects

Tumbled green aventurine quartz

Quartz, SiO₂, with fuchsite or other green mica inclusions

Tumbled amber

Amber (fossilized plant resin; commonly succinite, C10H16O)

Pearl

Aragonite / Calcium Carbonate (CaCO3)

Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)

BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel

Blue-green turquoise (probable)

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

Polished banded agate

Chalcedony (microcrystalline quartz), SiO₂

Dalmatian jasper

Quartz-bearing alkali feldspar syenite/porphyritic igneous rock, commonly marketed as Dalmatian jasper

Tumbled pink quartz (likely rose quartz)

Rose quartz, quartz (SiO₂), commonly colored by trace elements and microscopic inclusions

Lapis Lazuli

Lapis Lazuli (Complex aggregate of Lazurite, Calcite, and Pyrite)

Lapis Lazuli

Lazurite-rich metamorphic rock; (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Turquoise

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

Banded Agate (Onyx Variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Turquoise

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

Red cabochon gemstone ring (likely ruby or red spinel; identity unconfirmed)

Possibly corundum (ruby, Al₂O₃) or spinel (MgAl₂O₄); visual identification alone cannot distinguish these from glass or synthetic stones.

Small faceted gemstone, likely diamond

Diamond (crystalline carbon, C)

Pearl

Calcium carbonate (Aragonite/Calcite) - CaCO3

Tumbled blue-green stone, likely turquoise or chrysocolla

Turquoise: CuAl₆(PO₄)₄(OH)₈·4H₂O; chrysocolla: hydrated copper aluminosilicate

Aventurine

Silicon dioxide with micas (SiO2 + K(Al,Cr)2AlSi3O(OH)2)

Yellow faceted gemstone, likely citrine

Citrine: yellow variety of quartz, silicon dioxide (SiO₂)