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

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide / Chalcedony)

Beryl (likely Aquamarine) in matrix

Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)

Citrine

Citrine (Silicon Dioxide - SiO2)

Rough Dark Green Sapphire

Corundum (Al2O3)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Quartz (likely tumbled or naturally water-worn)

Quartz (SiO₂ - Silicon Dioxide)

Blue Sapphire

Corundum (Al2O3)

Green Quartzite

Metamorphic rock primarily composed of Silicon Dioxide (SiO2) with mineral inclusions like fuchsite or chlorite

Greenschist

Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)

Quartz / Quartzite

Silicon Dioxide (SiO2)

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Blue Lace Agate

Chalcedony (a form of Quartz) - SiO2

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂)

Prehnite

Prehnite, Ca2Al2Si3O10(OH)2

Serpentine

Serpentinite (group of minerals: (Mg,Fe,Ni,Al)3Si2O5(OH)4)

River Stone (Quartzite/Siltstone mixture)

Silicon Dioxide (SiO2) based metamorphosed sandstone

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.

Granite

Granite (a felsic intrusive igneous rock)

Serpentinite

Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Granite

Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Petrified Wood

Silicified Wood (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Dragon Blood Jasper

Epidote with Red Jasper inclusions (SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Mica Schist

Mica Schist (Predominantly Muscovite/Biotite)

Quartzite River Rock (with Limonite staining)

Quartzite (SiO2)

Tektite (likely Australite)

Tektite (no specific chemical formula as it's a natural glass of variable composition, mostly SiO2, Al2O3, FeO, MgO, CaO, K2O, Na2O, TiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz (Quartzite fragment)

Silicon Dioxide (SiO2)

Chrome Diopside

Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities

Granite (with Almandine Garnet inclusions)

Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)

Schist (Garnet-Mica Schist)

Garnetiferous Mica Schist (primarily Muscovite/Biotite and Almandine Garnet)

Quartz (likely milky/rose quartz variety)

Quartz (SiO2 - Silicon Dioxide)

Tiger's Eye

Tiger's Eye (a variety of Chalcedony, which is a microcrystalline quartz with fibrous inclusions of oxidized crocidolite)

Weathered Volcanic Rock (possibly Rhyolite or Andesite Pebble)

Volcanic rock (e.g., Rhyolite or Andesite, specific identification would require thin section analysis or chemical assay). Mineral composition: Primarily feldspars (orthoclase and/or plagioclase), quartz (in rhyolite), micas, amphiboles, and sometimes pyroxenes.

Calcite

Calcite (CaCO3)