Aventurine (likely Green Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Mineral/Mineraloid within a rock matrix
Category
Metamorphic (Modified)
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Foliated low-grade metamorphic rock
metamorphic
Pink Rhodonite
Manganese Silicate (MnSiO3)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (Variety of Quartz)
Rhodonite
Rhodonite (MnSiO3)
mineral
Black tourmaline (schorl), possibly rough
Schorl tourmaline, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Tumbled ruby-bearing corundum (probable)
Corundum, aluminum oxide (Al₂O₃), colored red by chromium; possibly ruby
gemstone
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Mineral
Rhodonite
Rhodonite (MnSiO3)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Greenstone / epidote–chlorite schist (tentative)
Epidote–chlorite schist, likely containing actinolite and quartz/feldspar
metamorphic
Serpentinite (likely serpentinized ultramafic rock)
Serpentine-group minerals, chiefly antigorite/lizardite; commonly derived from peridotite
metamorphic
Gneiss
Feldspathic biotite gneiss; a high-grade metamorphic rock composed mainly of quartz, feldspar, and mica
metamorphic
Banded marble (probable calcite marble)
Calcite marble, CaCO₃; possibly impure dolomitic marble
metamorphic
Tumbled banded gneiss or amphibolite
Banded metamorphic rock, likely quartz–feldspar–biotite gneiss with amphibole
metamorphic
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Granite-like granitic rock
Crystalline plutonic rock, primarily quartz, feldspar, and mica/amphibole
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Hematite
Iron Oxide (Fe2O3)
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite
Mineral
Mica Schist
Mica Schist (predominantly Muscovite/Biotite Schist)
metamorphic
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Epidote
Calcium aluminum iron silicate hydroxide (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Soapstone
Steatite
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble with iron staining
Silicon dioxide (SiO2) with iron oxide inclusions
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
White Buffalo Turquoise (or Howlite/Magnesite)
Calcite/Dolomite or Magnesite with Chert/Quartz inclusions
gemstone
Green Tourmaline (Verdelite)
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)
gemstone
Quartz pebble
Silicon dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Pink Quartz
Silicon Dioxide (SiO2)
mineral
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
mineral
Green Aventurine
SiO2
mineral
Pyrite in Matrix
Iron Sulfide (FeS2) embedded in host rock
mineral
Peacock Ore
Bornite (Cu5FeS4)
mineral
Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic