Metamorphic Rock (Primarily Composed Of Minerals)

Milky Quartz (Crystal Cluster)

Silicon Dioxide (SiO2) - Quartz Variety

Fulonite (Fulgurite-like)

Fulgurite (SiO2 fused silica/lechatelierite)

Nephrite Jade (River Cobble)

Nephrite (Silicate mineral: Ca2(Mg, Fe)5Si8O22(OH)2)

Mica Schist with Iron Staining

Muscovite/Biotite Schist

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartzite Pebble

Quartzite (primarily SiO2)

Limonite-stained Chert

Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Dalmation Stone (often called Dalmatian Jasper)

Antiperthite-rich Microgranite

Yellow Quartz (Citrine Quartz)

Silicon Dioxide (SiO2)

River Cobble (likely Basalt or Metagraywacke)

Non-specific water-worn lithic fragment

Sandstone (Quartz Arenite)

Sandstone (dominated by SiO2 quartz grains)

Sandstone with Quartz Veins

Arenite (primarily SiO2 with Fe2O3 staining)

Crystal Quartz Beads (likely Clear Quartz)

Quartz (SiO₂)

Tiffany Stone

Fluorite Opal (a complex mix of Fluorite, Opal, Calcite, Dolomite, Quartz, and Bertrandite)

Vesicular Basalt (Lava Rock)

Aphanitic Mafic Igneous Rock

Limonite (Iron Ore)

Goethite and related iron hydroxides (FeO(OH)·nH2O)

Granite

Phaneritic Igneous Rock (Granitic)

White Moonstone (Scolicite or White Feldspar var. )

Lattice-structure Silicate (KAlSi3O8)

Sparkling Druzy Quartz on Matrix

Silicon Dioxide (SiO2) with iron oxide inclusions

Clear Quartz (beads in a bracelet)

Quartz (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Citrine

Silicon Dioxide (SiO2) with iron impurities

Smoky Quartz

Quartz (SiO₂)

Quartzite with Chlorite

Metamosphosed Quartz Sandstone (SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2 inclusions)

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Chert / River Pebble

Silicon Dioxide (SiO2)

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxides

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Ferruginous Oxides

Natural Gemstone Cabochons (Ruby, Moonstone, Emerald, Citrine)

Ruby (Al2O3:Cr), Moonstone (KAlSi3O8), Emerald (Be3Al2(SiO3)6:Cr), Citrine (SiO2)

Nephrite Jade

Tremolite-Actinolite solid solution, Ca2(Mg,Fe)5Si8O22(OH)2

Diorite (Spotted or Dalmatian Stone pattern)

Diorite

Beryl (likely Aquamarine) in matrix

Be3Al2(SiO3)6 (Beryllium Aluminum Silicate)

Black Marble

Recrystallized Calcite (CaCO3)

Amazonite

K(AlSi3O8) - Microcline variant

Serpentine

Serpentine-group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Smoky Quartz and Clear Quartz Geode

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2)

Red Jasper with Quartz Veining

Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions