Mineral With Metamorphic Or Sedimentary Host

Ruby (Rough/Raw)

Corundum (Al2O3:Cr)

Lapis Lazuli

Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Turquoise (set in silver jewelry)

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Turquoise in Matrix

Hydrated phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

Serpentinite

Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Quartz with Pyrite

Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)

Rock Crystal Quartz

Quartz (SiO₂)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Epidote

Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Quartz with Mica inclusions (likely Schist or Gneiss host)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

Banded Chalcedony (Agate)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Garnet

Almandine formula: Fe3Al2(SiO4)3

Lapis Lazuli

Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Milky Quartz with inclusions

Silicon Dioxide (SiO2)

Epidote (Unakite-related)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Black Sapphire (Basaltic Blue Sapphire)

Corundum (Al2O3)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Stiped Slate Beach Pebble

Low-grade Metamorphic Slate with Quartz Vein (SiO2 on Phyllosilicate base)

Blue Apatite

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

Blue Sapphire (Tumbled/Polished)

Corundum (Al2O3)

Quartzite with Quartz Geode / Vug

Crystalline Silicon Dioxide (SiO2) in Metamorphic Host

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Prasiolite

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl)

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

Star Sapphire

Corundum (Al2O3) with Rutile inclusions

Charoite

Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)

Ptygmatic Migmatite

Migmatite (consisting of Neosome and Paleosome fractions)

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Quartz Vein in Sandstone

Sandstone with Hydrothermal Quartz (SiO2)

Prase Quartz on Feldspar

Quartz (Silicon Dioxide, SiO2) with Hedenbergite inclusions on Potassium Feldspar (KAlSi3O8)

Jadeite

Jadeite (NaAlSi2O6)

Yellow Jasper

SiO2 (Silicon Dioxide)

Dendritic Agate or Manganese Nodule in Chert/Limestone

Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

Greenstone or Chlorite Schist

Greenschist / Chlorite schist

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Emerald in Matrix

Beryl (Be3Al2Si6O18) containing Chromium/Vanadium impurities

White Quartz

Silicon Dioxide (SiO2)