Sedimentary Or Igneous

Milky quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Magnetite / Ironstone

Magnetite (Fe3O4)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Apatite

Fluorapatite (Ca5(PO4)3F)

Small quartz-rich mineral fragment

Quartz (SiO₂), possibly milky or chalcedonic quartz

Quartz

Silicon dioxide (SiO2)

Dalmatian Jasper

Aplite with Arfvedsonite inclusions

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Magnetite

Iron(II,III) oxide (Fe3O4)

Quartz pebble

Silicon dioxide (SiO2)

Clear Quartz

SiO2 (Silicon Dioxide)

Mica

Mica group (often Muscovite or Biotite)

Clear Quartz

Silicon Dioxide (SiO2)

Milky quartz

Quartz, silicon dioxide (SiO₂)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

Quartz Heart or Arrowhead Shape

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Quartz (Rose Quartz or Jasper variety)

Silicon Dioxide (SiO2)

Green Calcite

Calcium Carbonate (CaCO3)

Quartz

Silicon Dioxide (SiO2)

Apatite

Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)

Apatite

Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Chalcedony / Yellow Agate

Silicon Dioxide (SiO2)

Pyrite

Iron sulfide (FeS2)

Quartz pebble

Silicon dioxide (SiO2)

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation

SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)

Blue Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Yellow Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Milky Quartz

Quartz (SiO2)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite (potentially Hematite)

Magnetite (Fe₃O₄)

Banded Gneiss

Gneiss

Feldspar

Feldspar (Orthoclase/Microcline)

Pyrite Nodules / Weathered Pyrite

Iron Sulfide (FeS2)

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Clear Quartz

Silicon Dioxide (SiO2)