Sedimentary Or Metamorphic Derived

Milky Quartz

Silicon Dioxide (SiO2)

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Fuchsite

Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2

Blue Star Sapphire

Corundum (Al2O3)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Rough Star Sapphire (Corundum)

Al2O3 (Aluminum Oxide)

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Emerald in Schist (Raw/Tumbled)

Beryllium Aluminum Silicate (Be3Al2Si6O18) with Chromium/Vanadium impurities in Mica Schist

Aventurine and Amazonite

Silicon Dioxide (SiO2) with inclusions and Microcline (KAlSi3O8)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Quartzite

Quartzite (SiO2)

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Dearest Jewelry (Multigemstone)

Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)

Corundum (Ruby/Sapphire crystal)

Al2O3 (Aluminum Oxide)

Milky Quartz (Water-worn Pebble)

Quartz (Silicon Dioxide) - SiO2

Fluorite (left), Sodalite (middle), Dumortierite/Tumbled Quartzite (right)

Calcium Fluoride (CaF2), Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2), Aluminum Borosilicate (Al7(BO3)(SiO4)3O3)

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)

[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2

Tanzanite

Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))

Blue Sapphire (Synthetic or Man-made Glass Imitation)

Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic

Dumortierite Quartz

Al7BO3(SiO4)3O3 (Borosilicate mineral/Quartz inclusion)

Jade (Nephrite and Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2; Jadeite: NaAlSi2O6

Pyritic Quartzite

Metequartzite with FeS2 (Pyrite) inclusions

Dendritic Rhodonite

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

Amethyst

Amethyst (Silicon Dioxide - SiO2)

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Aventurine (Yellow Quartz)

Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2 (Calcium magnesium iron silicate hydroxide)

Jadeite

Jadeite (NaAlSi2O6)

Rhodonite in Quartz Matrix

Rhodonite (Manganese Iron Magnesium Calcium Silicate - Mn,Fe,Mg,Ca)SiO3

Amethyst and Ruby in Zoisite

Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite with Iron Inclusions

Quartzite (primarily SiO2)

Quartzite River Pebble

Quartzite (primarily Silicon Dioxide, SiO2)

Muscovite Mica (Granitic Pegmatite)

Muscovite - KAl2(AlSi3O10)(OH)2

Blue Apatite

Apatite group (Ca5(PO4)3(F,Cl,OH))

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)