Anthropogenic (Man Made Industrial Deposit)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Agate (Bead Form)

Agate (Cryptocrystalline Quartz, SiO2)

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).

Milky Quartz

Silicon Dioxide (SiO2)

Wonderstone (Sandstone)

Silicified Quartz Sandstone with Iron Oxide staining

Amethyst (Geode)

Silicon Dioxide (SiO2) with iron impurities

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Fossiliferous Limestone

Calcite (CaCO3) with Bioclastic inclusions

Granite

Granite (a plutonic rock)

Milky Quartz

Silicon Dioxide (SiO2)

Green Fluorite

Calcium Fluoride (CaF2)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Quartz (Crystal Point/Fragment)

Silicon Dioxide (SiO2)

Slate

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

Jasper (Iron-rich)

Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities

Granite

Granite (Felsic Plutonic Rock)

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Quartz

Silicon Dioxide (SiO₂)

Amygdaloidal Rhyolite (often called Lake Superior Agate relative)

Rhyolite with Calcite/Quartz amygdules (SiO2 and secondary minerals)

Cavansite

Cavansite (Ca(VO)Si4O10·4H2O)

BROWN GRANITE (likely 'Tan Brown' or similar)

Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Emerald In Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

Calligraphy Stone

Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)

Fluorite

Calcium Fluoride (CaF2)

Petrified Wood

Silicified wood (Quartz, SiO2)

Apache Tear (Obsidian)

Obsidian / Amorphous Volcanic Glass (primarily SiO2)

Amazonite (or Amazon Stone)

Potassium Feldspar (Microcline), K(AlSi3O8)

Rose Quartz

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

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Sandstone (Water-worn Pebble)

Clastic Sedimentary Rock (primarily SiO2)

Chert (Flint Nodules)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Granite (weathered pebble)

Granite (plutonic igneous rock)

Hematite

Hematite (Fe2O3)

Crinoid Fossil in Limestone

Crinoid (Class Crinoidea) in Fossiliferous Limestone (CaCO3)

Sunstone (Heliolite)

Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)

Amber

Succinite (Formula: C10H16O)

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)

Chert (microcrystalline quartz)