Tumbled quartz-rich stone, likely milky quartz
Quartz (SiO₂), possibly iron-stained milky quartz or quartzite
mineral
Category
Igneous, Sedimentary, And Metamorphic
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Banded gneiss
Quartz–feldspar gneiss, possibly biotite-bearing; exact identification requires testing
metamorphic
Banded gneiss
Foliated gneiss, likely quartz–feldspar–mica gneiss
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Magnetite with Quartz
Magnetite (Fe3O4)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite / Ironstone
Iron(II,III) oxide (Fe3O4)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Blue Apatite
Calcium phosphate mineral, Ca5(PO4)3(F,Cl,OH)
mineral
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Foliated Metamorphic Rock
metamorphic
Red Garnet (likely Almandine or Pyrope)
Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)
mineral
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Green Gneiss
Metamorphic Gneiss
metamorphic
Faceted Gemstones (Mixed)
Various (e.g., Corundum, Beryl, Quartz, or synthetic equivalents)
gemstone
Quartz pebble
Silicon dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Crystalline Silicon Dioxide (SiO2)
gemstone
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral