Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Native Copper in Basalt

Cuprum (with Host Basalt)

Quartz Pebble

Silicon Dioxide (SiO2)

Diopside (likely Chromian Diopside)

Diopside, part of Clinopyroxene family of inosilicates. Chemical formula: CaMgSi2O6. The green variety is often Chromian Diopside due to chromium impurities.

Basalt

Basalt (composition of Plagioclase feldspar and Pyroxene)

Quartz Geode

Silicon Dioxide (SiO2)

Pyrite

Pyrite (Iron sulfide, FeS₂)

Smoky Quartz

Silicon Dioxide (SiO2)

Ruby

Corundum (Al2O3) with Chromium traces

Aquamarine

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Apatite

Apatite Group (e.g., Fluorapatite Ca5(PO4)3F, Chlorapatite Ca5(PO4)3Cl, Hydroxylapatite Ca5(PO4)3(OH))

Agate (specifically a Blue Agate Geode Slice)

Chalcedony (cryptocrystalline variety of Quartz); SiO2

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Red Jasper (Opaque Chalcedony)

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Quartz (Translucent/Rose variety)

Silicon Dioxide (SiO2)

Graphic Granite

Graphic Granite (a variety of Pegmatite)

Pumice

Pumicite / Vesicular Rhyolite

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Milky Quartz with Mica

Silicon Dioxide (SiO2) with Muscovite Mica [KAl2(AlSi3O10)(OH)2]

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Smoky Quartz (with possible Garnet inclusions)

Silicon Dioxide (SiO2)

Epidote

Epidote - {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Quartz Pebble

Silicon Dioxide (SiO2)

Yellow Quartzite

Quartzite (primarily SiO2)

Banded Agate (Lace Agate)

Agate (Variety of Cryptocrystalline Quartz), SiO2

Quartzite

Quartzite (SiO2)

Citrine Quartz

Silicon Dioxide (SiO2)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Garnet (specifically Almandine or Pyrope)

Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Quartzite Pebble

Quartzite (SiO2)

Black Tourmaline (Schorl)

Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Granitic Pegmatite with Biotite

Pegmatitic Granite (contains KAlSi3O8, SiO2, K(Mg,Fe)3AlSi3O10(OH)2)

Sandstone (Weathered Pebble)

Arenite (SiO2 primarily)

Red Garnet

Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Muscovite Mica (Golden/Yellow variety)

KAl2(AlSi3O10)(F,OH)2

Peridotite (with Olivine)

Peridotite (rich in Olivine, (Mg,Fe)2SiO4)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Quartz (Iron-stained or Ferruginous Quartz)

Silicon Dioxide (SiO2)