Igneous, Sedimentary, Metamorphic, Mineral, Gemstone, Fossil, Or Meteorite

Shatter Cone

Impactite (Shatter Cone texture)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Limonite Concretion (Goonie or Rattlestone)

Limonite (FeO(OH)·nH2O)

White Quartz

Silicon Dioxide (SiO2)

Likely quartz-rich stone or shell fragment

Uncertain; possibly quartz (SiO₂) or a calcareous shell fragment (CaCO₃)

White Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Mixed Mineral Collection

Multi-mineral Assemblage (Quartz, Jasper, Obsidian, Pyrite, etc.)

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Peridot

Olivine ((Mg,Fe)2SiO4)

Quartz

Silicon Dioxide (SiO2)

Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (primarily SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz pebble

Silicon dioxide (SiO2)

Quartz Mineral

Silicon Dioxide (SiO2)

Clear Quartz (Faceted)

Silicon Dioxide (SiO2)

White Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Peridot

Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Sandstone Concretion

Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)

Ironstone Concretion

Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)

Fossilized bivalve shell or shell-rich limestone

Likely an indeterminate fossil mollusk; calcite/aragonite (CaCO₃), possibly preserved in limestone

Olivine

(Mg,Fe)2SiO4

Quartz

Silicon Dioxide (SiO2)