Man Made Glass

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz with Mica/Chlorite inclusions

Silicon Dioxide (SiO2) with phyllosilicate inclusions

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Hypersthene (or Enstatite/Ferrosilite)

Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Jasper (likely Brown or Brecciated)

Jasper (Silicon Dioxide, SiO2)

Red Jasper

Jasper (Silicon Dioxide: SiO2 with Iron oxide inclusions)

Rose Quartz

Silicon dioxide (SiO2) with trace titanium, manganese, or iron

Quartz

Quartz (SiO2 - Silicon Dioxide)

Petrified Wood

Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)

Quartzite

Quartzite (SiO2)

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Fluorite

Calcium Fluoride (CaF2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Mahogany Obsidian Arrowhead

Volcanic Glass with Hematite/Magnetite inclusions (Amorphous Silicon Dioxide)

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Chert (White-Tan variety)

Silicon dioxide (SiO2) / Microcrystalline Quartz

Sandstone Beach Pebble

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Quartzite

Quartzite (SiO2)

Sandstone

Arenite (SiO2 + various cementing minerals)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Commonly known as Flint or Jasper when pigmented)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Quartz Sandstone)

Clastic sedimentary rock (primarily SiO2)

Celestine (or Celestite)

Strontium sulfate (SrSO4)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Blue Calcite

Calcite (CaCO3)

Sandstone (Pebble/Cobble)

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)

Milk Quartz (Common White Quartz)

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky or Iron-Stained)

Silicon Dioxide (SiO2)

Chert (Limestone-based)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily SiO2)

Red Garnet

Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)

Rhodonite

Rhodonite (MnSiO3)

Quartzite Pebble

Quartzite (SiO2)

Limestone

Calcium carbonate ( преимущественно CaCO3)

Rose Quartz

Silicon Dioxide (SiO2) with trace Titanium, Manganese, or Iron

Rose Quartz

Rose Quartz (SiO2 with traces of Titanium, Iron, or Manganese)

Quartz Druzy Geode

Silicon Dioxide (SiO2) - Crystalline Variety

Citrine Quartz

Silicon Dioxide (SiO2)