Metamorphic Rock

Basalt

Extrusive mafic igneous rock

Herkimer Diamond

Quartz (Silica - SiO2)

Sandstone (Weathered Cobble)

Clastic sedimentary rock (primarily SiO2)

Jadeite Jade

Jadeite (NaAlSi2O6)

Quartz

Silicon Dioxide (SiO2)

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Quartz (Crystal/Druzy Quartz)

Quartz (SiO₂)

Vuggy Quartz on Matrix

Crystalline Silicon Dioxide (SiO2)

Sandstone (with Iron Staining)

Arenite (primarily SiO2 with Fe2O3/FeO(OH) oxides)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Quartz (SiO₂)

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of Quartz and Potassium Feldspar)

Basalt

Basalt (Mafic Extrusive)

Vesicular Basalt with Quartz/Chalcedony

Vesicular Basalt (primarily Plagioclase, Pyroxene, and Olivine with SiO2 infill)

Chert (River Pebble)

Microcrystalline Quartz (SiO2)

Sandstone (Glacial Cobble)

Arenite / Sedimentary Rock (primarily SiO2)

Garnet (Almandine)

Almandine, Fe3Al2Si3O12

Druzy Quartz on Matrix

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Quartz (SiO2 - Silicon Dioxide)

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3

Basalt

Mafic Igneous Rock (composed primarily of pyroxene and calcium-rich plagioclase)

Sandstone (with potentially high Feldspar/Arkose content)

Clastic sedimentary rock (SiO2 dominated)

Vesicular Basalt (Lava Rock)

Basalt (Vesicular Variety)

Shale

Lutaceous sedimentary rock

Red Garnet

Pyrope or Almandine (X3Y2(SiO4)3)

Pegmatite (likely Granitic Pegmatite)

Pegmatite (a coarse-grained igneous rock, often with granitic composition)

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)

Zoisite with Ruby

Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)

Laterite

Laterite (no specific mineral formula as it's a rock type)

Garnet (likely Almandine or Pyrope)

Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)

Plume Agate or Moss Agate

Agate (SiO2)

Basalt

Vesicular Basalt

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Ironstone Concretion (Ironstone Gourd)

Limonite/Goethite Concretion (FeOO(H))

Druzy Quartz Geode

Silicon Dioxide (SiO2)

Rhodonite

Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3

Basalt

Extrusive mafic igneous rock