Mineral (Man Made Glass)

Goldstone and Aura Quartz

Cuprous Glass (Goldstone) and Titanium-coated SiO2 (Aura Quartz)

Sandstone

Sandstone (Quartz-rich Arenite / SiO2)

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Faceted transparent gemstone pendant

Uncertain from image; likely faceted quartz (SiO₂), cubic zirconia (ZrO₂), or glass imitation

Sandstone (specifically Arkose or Quartz Arenite)

Arenite (primarily SiO2 with possible Feldspar)

Turquoise-colored bead necklace (likely dyed howlite or magnesite)

Likely dyed Ca₂B₅SiO₉(OH)₅ (howlite) or MgCO₃ (magnesite); turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O

Weathered chert or chalcedony nodule

Microcrystalline quartz (SiO₂), possibly silicified limestone or agate-like chalcedony

Chert (varietal: Flint/Jasper)

Silicon Dioxide (SiO2)

Polished brown jasper (likely iron-rich jasper)

Jasper, an opaque microcrystalline variety of quartz (SiO₂)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Diamond (Cut jewelry specimen)

Diamond (pure Carbon, C)

Ferrosilicon Slag (Industrial Vitrified Glass)

Vitreous Silicate Residue

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Turquoise (likely stabilized or simulated Howlite)

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

Goldstone

Avventurina (Cu + SiO2 glass)

Tumbled amber-colored chalcedony or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper

Faceted colored gemstones, likely synthetic corundum or glass imitations

Not identifiable from the image; possible synthetic corundum (Al₂O₃)

Chert (Flint)

Silicon Dioxide (SiO2)

Lapis lazuli and green-blue chalcedony jewelry

Lapis lazuli: lazurite-bearing metamorphic rock, chiefly lazurite (Na₃Ca(Al₃Si₃O₁₂)S) with calcite and pyrite; second stone: likely chrysoprase or green-blue chalcedony (microcrystalline quartz, SiO₂)

Sea Glass (Frosted Glass)

Amorphous Silica (SiO2) with various additives

Tumbled feldspar, likely orthoclase

Potassium feldspar (KAlSi₃O₈), likely orthoclase

Grey Chalcedony

Silicon Dioxide (SiO2)

Diamond (as featured in jewelry)

Diamond (C - pure carbon)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (specifically Jasper or Flint)

Cryptocrystalline Quartz (SiO2)

Sandstone

Arenite (SiO2, often with CaCO3 or Fe2O3 cement)

Tumbled iron-rich stone, likely hematite-bearing jasper

Jasper (microcrystalline quartz, SiO₂) with iron oxides, chiefly hematite/goethite

Chert (likely flint)

Microcrystalline quartz (SiO₂), variety chert; flint is a dark chert variety

Tumbled greenstone (likely serpentinite or green jasper)

Serpentinite, commonly dominated by serpentine-group minerals (Mg₃Si₂O₅(OH)₄); exact identification requires testing

Red granite boulder

Granite, a coarse-grained felsic intrusive igneous rock; commonly quartz + feldspar + mica

Blue chalcedony cabochon (likely)

Chalcedony, microcrystalline SiO₂; possibly blue agate or common opal, which cannot be distinguished confidently from the image

Chert (Yellow Jasper/Flint)

Silicon Dioxide (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Fossil coral

Fossilized colonial coral, likely rugose or tabulate coral preserved in limestone

Pyrite in Matrix

Iron Sulfide (FeS2)

Malaysian 50 Sen Coin

Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)

Amber

Succinite (Carbon-based organic compound; approximate formula C10H16O)

Quartzite

Metamorphic Quartzite (SiO2)

Flint

Microcrystalline Quartz (SiO2)

Quartzite

Metamorphic Quartzite

Jasper

Silicon Dioxide (SiO2)