Mineral Or Sedimentary Rock (With Mineral Inclusions)

Milky Quartz

Silicon Dioxide (SiO2)

Lapis Lazuli

(Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2 (Complex silicate rock)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky and Bull Quartz)

Silicon Dioxide (SiO2)

Mexican Crazy Lace Agate

Silicon Dioxide (SiO2) with iron and aluminum inclusions

Red Sandstone

Arenite (primarily SiO2 with hematite/iron oxide coating)

Tumbled tree agate (dendritic agate)

Cryptocrystalline quartz, SiO₂, with manganese/iron-oxide dendrites

Brecciated Jasper

Silicon Dioxide (SiO2) with hematite and other mineral impurities

Yellow Aventurine

Quartz (SiO2) with inclusions

Vesicular Basalt with Xenocrysts

Mafic Igneous Plutonic/Extrusive Complex

Moss Agate

Agate (Silicon Dioxide, SiO2) with dendritic inclusions

Red Quartz (Druzy)

Silicon Dioxide (SiO2) with Hematite inclusions

Jasper (Yellow Jasper)

Silicon Dioxide (SiO2) with iron inclusions

Mica Schist (with Muscovite mica)

Mica Schist (KAl2(AlSi3O10)(OH)2)

Dalmatian Stone

Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)

Sandstone

Arenite (primarily SiO2)

Quartz / Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Sandstone

Arenite (composed primarily of SiO2)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Zebra Jasper

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)

Silicon Dioxide (SiO2) with iron inclusions

Lapis Lazuli (polished cabochon/sphere)

Na8[Al6Si6O24]Sn with accessory minerals (Pyrite, Calcite)

Quartz Pebble (with Dark Volcanic/Sedimentary Inclusion)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Fossiliferous Siltstone

Clastic Sedimentary Rock with Fossil Inclusions

Amygdaloidal Rhyolite (often called Lake Superior Agate relative)

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

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Milky Quartz

Silicon Dioxide (SiO2)

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Blue Quartz

Silicon Dioxide (SiO2) with inclusions

Jasper (likely Ocean Jasper or Variegated Jasper)

Silicon Dioxide (SiO2) with impurities

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Tumbled clear quartz (rock crystal)

Quartz — silicon dioxide (SiO₂)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Gneiss

Gneiss

Sandstone

Arenite (primarily SiO2)

Milky Quartz (Druzy Geode fragment)

Silicon Dioxide (SiO2)

Milky Quartz with Chlorite Schist Inclusions

Quartz (SiO2) with Chlorite Group silicates (typically (Mg,Fe)3(Si,Al)4O10(OH)2)

Concrete fragment with Aggregate

Anthropogenic Concrete with Calcarious and Siliceous Aggregate

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Geode Segment

Crystalline Silicon Dioxide (SiO2)