Mineral With Metamorphic Or Igneous Host

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz Vein with Matrix

Silicon Dioxide (SiO2)

Sapphire

Corundum (Al₂O₃) with trace elements causing color variations.

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz (Druzy)

Crystalline Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Fuchsite in Quartz

Muscovite (KAl2(AlSi3O10)(OH)2) containing Chromium + Quartz (SiO2)

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix

Quartz (vein quartz)

SiO2 (Silicon Dioxide)

Quartz Vein in Matrix

Silicon Dioxide (SiO2)

Aquamarine (Rough)

Beryl (Be3Al2Si6O18)

Sagenitic Agate (with Goethite/Rutile inclusions)

Silicon Dioxide (SiO2) with hydrous ferric oxide inclusions

Olivine in Basalt (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)

Quartz in Host Rock

Silicon Dioxide (SiO2) in Rhyolite or Granite matrix

Amethyst (Quartz)

Silicon Dioxide (SiO2) with Iron impurities

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Amethyst

Quartz (Silicon Dioxide) - SiO2 with Iron impurities

Peacock Ore (Bornite or Iridescent Chalcopyrite)

Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation

Schist

Schist (primarily mica-schist)

Amethyst (Raw Quartz)

Silicon Dioxide (SiO2) with iron impurities

Shatter Cone

Impactite (Shatter Cone texture)

Fuchsite on Quartz

Muscovite (KAl2(AlSi3O10)(OH)2) with Chromium impurities

Carnelian (Red Chalcedony)

SiO2 (Silicon Dioxide with Iron Oxide impurities)

Amygdaloidal Basalt

Amygdaloidal Mafic Volcanic Rock

Pyrite in Shale

Iron Sulfide (FeS2)

Gold-bearing Quartz

Auriferous Quartz (SiO2 with Native Gold inclusion)

Basalt with Quartz/Calcite Veins

Aphanitic Mafic Igneous Rock with Hydrothermal Veining

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Quartz Druzy (on Calcedony/Quartz base)

Silicon Dioxide (SiO2)

Carnelian Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Chrysocolla in Matrix

Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix

Schist

Schist (metamorphic rock)

Botryoidal Pyrite

Iron Sulfide (FeS2)

Gold Ore in Quartz

Native Gold (Au) in Quartz (SiO2)

Schist (specifically Mica Schist)

Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)

Emerald In Matrix

Beryl (Be3Al2Si6O18) with trace Chromium/Vanadium

Larimar

Pectolite [NaCa2Si3O8(OH)] with copper substitution

Basalt with Quartz Vein

Aphanitic Mafic Igneous Rock with Silicon Dioxide (SiO2) intrusion