Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)

Quartzite River Rock with Dendrites

Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions

Chakra Stone (Composite / Man-made Bonded Gemstones)

Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)

Quartz (Milky/Bull Quartz)

Silicon Dioxide (SiO2)

Citrine

Quartz (SiO2) - variety Citrine

Mica Schist

Muscovite/Biotite Schist

Green Aventurine (Green Quartzite)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color

Silicon Dioxide (SiO2), a variety of Chalcedony

Fulgurite

Fulgurite (Lechatelierite), amorphous SiO2

Ruby

Corundum (Al2O3 with Chromium trace impurities)

Quartz

Quartz (SiO₂)

Green Aventurine in Host Rock

SiO2 (Quartz with Fuchsite inclusions)

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

Gneiss (Metamorphic Rock)

Gneiss

Schist (Garnet-Mica Schist)

Garnet-Mica Schist (X-Y)3Z2(SiO4)3

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Tiger's Eye

Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)

Mica Schist

Foliated Metamorphic Rock (rich in Muscovite or Biotite)

River Cobble (Phyllite or Quartzite)

Metasedimentary Rock (often containing SiO2 or KAl2(AlSi3O10)(OH)2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss (specifically Banded Gneiss)

Gneiss

Unakite (Epidotized Granite)

Epidote-Feldspar-Quartz Rock

Mica Schist

Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)

Milky Quartz

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of minerals in the Serpentine group: Chrysotile, Lizardite, and Antigorite)

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Lapis Lazuli

Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Blue Quartzite

Quartzite (primarily SiO2) with inclusions like Dumortierite or Magnesio-riebeckite

Smoky Quartz and Biotite Schist

Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)

Gneiss with Quartz Veining

Gneiss (High-grade regional metamorphic rock)

Schist

Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Moonstone

Orthoclase Feldspar (composed of alternate layers of orthoclase and albite), (K,Na)AlSi3O8

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)

Agate

Silicon Dioxide (SiO2) - Chalcedony variety

Quartz Pebble (Citrine-colored or Stained Quartz)

Silicon Dioxide (SiO2)

Quartz Vein in Gneiss or Basalt

Milky Quartz (SiO2) within Metamorphic Host Rock

Granite

Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)

Pumice

Pumicite (fine-grained pumice), Scoria (similar origin but denser and darker, usually basaltic)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)