Man Made Rock (Sedimentary Analogue)

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Quartzite

Metamorphic Quartzite (SiO2)

Basalt

Basalt

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Polished blue-green glassy slag or coated mineral fragment

Most likely man-made colored glass/slag; exact composition cannot be determined visually

Sandstone

Arenite

Granite

Granite (Felsic Plutonic Rock)

Tektite

Natural impact glass

Turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O

Granite

Granite (Plutonic Igneous Rock)

Slate

Slate (Foliated Metamorphic Rock)

Aura Quartz (Anomalously Coated Quartz)

Silicon Dioxide (SiO2) treated with vaporized metals

Chert (varieties include Flint and Jasper)

Silicon Dioxide (SiO2)

Yooperlite (Syenite clast containing fluorescent Sodalite)

Sodalite-bearing Syenite

Mother of Pearl (Nacre)

Calcium Carbonate (primarily aragonite, with conchiolin)

Diorite (River Pebble)

Intermediate Phaneritic Igneous Rock

Chalcedony (Agate / Jasper Specimen)

Silicon Dioxide (SiO2)

Goldstone and pink quartz bead strands

Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible

Granite

Granite (phaneritic intrusive igneous rock consisting of quartz, feldspar, and mica)

Quartzite pebble

Quartzite (SiO2)

Blue glass-like tumbled specimen

Most likely cobalt-blue slag glass or manufactured glass; not confidently identifiable as a natural mineral from the image

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Polymictic breccia, possibly volcanic breccia

Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals

Granite

Phaneritic Plutonic Felsic Rock

Basalt

Basalt (comprising Plagioclase feldspar, Pyroxene, and Olivine)

Green Aventurine

Quartz (SiO2) with Fuchsite inclusions

Lapis Lazuli

Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2

Bog Iron / Limonite Concretion

Goethite/Limonite mixture (FeO(OH)·nH2O)

Granite

Phaneritic Felsic Intrusive Igneous Rock

Gypsum (Satin Spar / Alabaster variety)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Diorite

Diorite (Plagioclase feldspar and amphibole/biotite)

Chert (Flint)

Silicon Dioxide (SiO2)

Limestone

Calcium Carbonate (CaCO3)

Chert (varietal: Flint/Jasper)

Silicon Dioxide (SiO2)

Fossil Sea Urchin (Echinoid)

Echinoidea fossil (often replaced by silica or calcite)

Quartz

Silicon dioxide (SiO₂)

Chert (Chert / Flint Variety)

Microcrystalline / Cryptocrystalline Quartz (SiO2)

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Desert Rose (also known as Sand Rose)

Gypsum (CaSO4·2H2O) or Barite (BaSO4) with sand inclusions

Malaysian 50 Sen Coin

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

Chert (Flint)

Silicon Dioxide (SiO2)

Granite

Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)