Sedimentary And Igneous (Mixed)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz / Clear Quartz

Silicon Dioxide (SiO2)

Dearest Ring (Gemstones)

Mixed Gemstones: Diamond (C), Emerald (Be3Al2Si6O18), Amethyst (SiO2), Ruby (Al2O3), Sapphire (Al2O3), Topaz (Al2SiO4(F,OH)2)

Sandstone with Liesegang Rings

Quartzose Sandstone with Iron Oxide Precipitation

Clear Quartz (Faceted Crystal)

Silicon Dioxide (SiO2)

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Ironstone / limonite-rich rock

Limonite, chiefly hydrated iron oxides (FeO(OH)·nH₂O), commonly mixed with goethite and hematite

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Likely tumbled brown jasper or iron-rich chert

Microcrystalline quartz (SiO₂), probably colored by iron oxides

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Small polished dark mineral specimen

Indeterminate; possibly black tourmaline (schorl) or hematite

Pink Chalcedony

Silicon Dioxide (SiO2)

Mookaite Jasper

Siliceous sedimentary rock (variety of Jasper/Chert)

Black Tourmaline (Schorl)

Schorl (Na(Fe^2+)3Al6(Si6O18)(BO3)3)(OH)3(OH))

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Yellow-brown chert or jasper

Microcrystalline quartz (SiO₂), likely iron-oxide-bearing chert/jasper

Rounded gray stone, likely slate or fine-grained sandstone

Probable slate (low-grade metamorphosed shale) or lithic sandstone; exact identification requires testing

Tumbled yellow jasper

Jasper, microcrystalline quartz (SiO₂) colored by iron oxides

Botryoidal Hematite (included in Quartz/Limonite matrix)

Fe2O3 (Hematite) on Quartz (SiO2) / Limonite

Pyrite

Iron Pyrite (FeS2)

Magnetite / Ironstone

Magnetite (Fe3O4)

Milky Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky Quartz / Quartzite)

Silicon Dioxide (SiO2)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Apatite

Fluorapatite (Ca5(PO4)3F)

Orange Quartzite (or Yellow Jasper / Carnelian Chalcedony)

Silicon Dioxide (SiO2)

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Quartz (Silicon Dioxide, SiO2)

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Small quartz-rich mineral fragment

Quartz (SiO₂), possibly milky or chalcedonic quartz

Pink Quartz

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite

Calcium Carbonate (CaCO3)

Jasper

Microcrystalline Quartz (SiO2)

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)