Metamorphic Or Igneous

Chiastolite (Andalusite)

Al2SiO5

Graphite

Graphite (Native Carbon, C)

Quartzite

Quartzite (primarily SiO2)

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

Zebra Jasper (usually a trade name for Serpentine or Basalt blend)

Antigorite/Chrysotile (Serpentine family) - Mg3Si2O5(OH)4

Aventurine

Aventurine Quartz (SiO2 with inclusions)

Lapis Lazuli

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Garnet (Almandine variety)

Almandine, Fe3Al2(SiO4)3

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Jade (specifically Nephrite or Jadeite beads)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2) or Jadeite (NaAlSi2O6)

Gossan (Iron Hat)

Limonitic Gossan (predominantly FeO(OH)·nH2O)

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (chromium-rich mica)

Epidote-bearing Granite (Unakite-like)

Epidotized Granite

Jade (likely Nephrite or Jadeite)

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

Quartzite

Quartzite (SiO2)

Quartzite

Quartzite (SiO2)

Tiger's Eye (Rough)

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Rough Tanzanite

Zoisite (Ca2Al3(SiO4)3(OH))

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milk Quartz (Vein Quartz)

Quartz (Silicon Dioxide, SiO2)

Granite

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Dalmation Stone

Peralkaline Rock (mixed silicate minerals)

Granite

Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)

Dalmation Stone (often called Dalmatian Jasper)

Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite

Conglomerate with Quartz Inclusions

Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)

Green Quartzite (Aventurine-like)

Quartzite (primarily SiO2 with trace Fuchsite mica inclusions)

Schist

Mica Schist (primarily Muscovite and Quartz)

Milky Quartz (with Iron Oxide staining)

Quartz (Silicon Dioxide - SiO2)

Shale

Shale (comprised mostly of clay minerals and quartz)

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Pink Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Slate

Slate (Foliated metamorphic rock consisting mainly of quartz and muscovite or illite)

Stiped Slate Beach Pebble

Low-grade Metamorphic Slate with Quartz Vein (SiO2 on Phyllosilicate base)

Slate

Foliated Metamorphic Rock (primarily composed of quartz, illite, chlorite, and micas)

Quartzite

Quartzite (SiO2)

K2 Jasper (K2 Granite)

Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)

Slate

Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)

Quartzite

Quartzite (primarily SiO2)

Mica Schist

Mica Schist (Composition typically includes Muscovite KAl2(AlSi3O10)(OH)2 and Quartz SiO2)

Quartzite

Quartzite (primarily SiO2)