Mineral Like (Anthropogenic)

Dyed Agate

SiO2 (Silicon Dioxide)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz Pebble

Silicon dioxide (SiO2)

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Granite

Granite (Felsic Plutonic Rock)

Chalcedony Geode Fragment (Botryoidal)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Milky Quartz

Silicon dioxide (SiO2)

Sunstone

Oligoclase (Plagioclase Feldspar Group) - (Ca, Na)(Al, Si)4O8

Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper)

AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition

Lapis Lazuli

Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Septarian Nodule

Septarian Concretion (CaCO3 with Siderite/Calcite/Aragonite)

Sandstone (Red Sandstone)

Arenite (primarily Quartz with Hematite cement)

Septarian Nodule (or Mudstone with Septarian Cracking)

Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Claystone)

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)

Calcite

Garnet (likely Almandine or Pyrope)

Garnet Group, Nesosilicates (Complex chemistry, e.g., Almandine: Fe3Al2Si3O12)

Quartz (Grain)

Silicon Dioxide (SiO2)

Moss Agate Geode Sphere

Silicon Dioxide (SiO2) - Chalcedony with Chlorite or Manganese inclusions

Quartz (Milky or Smoky variant)

Silicon Dioxide (SiO2)

Quartz (Milky or Common variety)

Silicon Dioxide (SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (with man-made markings)

Arenite (composed primarily of Quartz, SiO2)

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)

Fossilized Shark Tooth

Carcharocles sp. or similar (Fossilized Fluorapatite)

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Citrine variety)

Silicon Dioxide (SiO2)

Bronzite

(Mg,Fe)SiO3

Fluorite, Sodalite, and Rose Quartz collection

Calcium Fluoride (CaF2), Sodium Aluminum Silicate with Chlorine (Na8(Al6Si6O24)Cl2), Silicon Dioxide (SiO2)

Quartz (Variety: Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate (Microcline)

Aquamarine with Ruby Accent

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Aluminum Oxide (Al2O3)

Sodalite

Na8(Al6Si6O24)Cl2

Schist

Chlorite-Mica Schist

River Cobble (likely Basalt or Metagraywacke)

Non-specific water-worn lithic fragment