Metamorphic Or Sedimentary (With Staining)

Quartz (Microcrystalline/Macro crystalline variety)

Silicon Dioxide (SiO2)

Quartz Vein Rock

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Zebra Jasper

Jasper (variety of Quartz/Chalcedony), SiO2

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Gold-bearing Prospecting Specimen)

Silicon Dioxide (SiO2)

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Iron-stained Quartz

Silicon Dioxide with Hematite/Limonite impurities (SiO2 + Fe2O3)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2) with Limonite/Goethite

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Milky Quartz (Tumbled)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide) - SiO2

Gold Ore (in Quartz/Sulfide matrix)

Native Gold (Au) in Quartz (SiO2) and Pyrite (FeS2)

Quartz nodule (River pebble)

Silicon Dioxide (SiO2)

Beach Pebble (Chert/Quartzite)

Microcrystalline Quartz (SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milk Quartz (Tumbled Pebble)

Quartz (Silicon Dioxide, SiO2)

Feldspathic Granite (likely Syenite or Granite Pegmatite)

Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)

Blue Agate (Tumbled and Dyed)

Silicon Dioxide (SiO2) with likely organic dyes

Amygdaloidal Basalt with Quartz/Calcite Inclusions

Amygdaloidal Basalt (SiO2 / CaCO3 inclusions)

Gold-Bearing Quartz

Auriferous Quartz (SiO2 with native Au)

Gold-Bearing Quartz

Silicon Dioxide with Native Gold (SiO2 + Au)

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)

Quartz with Mica inclusions (likely Iron-stained)

Silicon Dioxide (SiO2) with Phyllosilicates

Hematite

Iron(III) oxide (Fe2O3)

Quartz Pebble (Iron-stained)

Silicon Dioxide (SiO2)

Granite

Phaneritic Felsic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Iron-Stained Quartz Pebble

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Amazonite (with smoky quartz/red jasper inclusions)

Tectosilicate - Microcline Feldspar (KAlSi3O8)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Botryoidal Chalcedony (Agate/Carnelian)

Chalcedony (SiO2)

Milky Quartz with Limonite

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities