Gneiss with Quartz Veining
Gneiss (High-grade regional metamorphic rock)
metamorphic
Category
Igneous, Sedimentary, Metamorphic, Mineral
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Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mineral
Greenschist
Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Mixed Gemstone Bracelet
Mixed natural minerals and rocks (e.g., Rhodonite, Malachite, Sodalite, Rose Quartz, Black Tourmaline, Quartz/Chalcedony variants)
Mineral/Rock assemblage
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Green Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Gneiss
Gneiss
metamorphic
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Gneiss
Gneiss
metamorphic
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
mineral
Blue Apatite
Fluorapatite / Apatite Group Ca5(PO4)3(F,Cl,OH)
mineral
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (on Granite)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Gneiss (Granitic Gneiss)
Gneiss
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Gneiss
Gneissic Metamorphic Rock
metamorphic
Gneiss
Foliated Metamorphic Gneiss
metamorphic
Quartz (beads)
SiO2 (Silicon Dioxide)
Mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Nuummite
Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)
metamorphic
Quartz Crystal
Quartz (SiO₂)
Mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Apatite in Matrix
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Gneiss
Gneiss
metamorphic
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Foliated Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
K-Feldspar (Potassium Feldspar / Pink Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Gneiss
Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)
metamorphic