Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral
Category
Igneous, Metamorphic, Sedimentary
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Garnet
Group of silicate minerals (e.g., Almandine: Fe3Al2(SiO4)3)
gemstone
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
gemstone
Lapis Lazuli
(Na,Ca)8(Al,Si)12O24(S,SO4)(Cl)2
mineral
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Kyanite
Kyanite (Al2SiO5)
mineral
Migmatite
Migmatite (Mixed Rock)
metamorphic
Greenstone or Epidote-rich rock
Epidote or Chlorite schist/greenstone
metamorphic
Raw Emerald (Emerald Beryl)
Beryl (Be3Al2Si6O18) with chromium/vanadium impurities
mineral
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Gneiss
Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)
metamorphic
Mixed river-worn rock and mineral collection
Mostly quartz/quartzite, feldspar-bearing granitoid, chert, and mafic volcanic rocks; exact species vary by pebble
igneous, sedimentary, metamorphic, mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Sphalerite
Zinc Sulfide (ZnS)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Magnetite
Magnetite (Fe3O4)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Hematite)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (likely Milky Quartz)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
mineral
Emerald in Matrix (Quartz/Schist)
Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities
mineral
Labradorite (tumbled)
Labradorite (a plagioclase feldspar mineral between anorthite and albite; chemical formula: (Ca,Na)(Si,Al)4O8)
Mineral
Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Milky Quartz with Iron Staining
Quartz (SiO2)
mineral
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
gemstone
Prehnite with Epidote and Quartz
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Prehnite
Calcium aluminum silicate hydroxide, Ca2Al(AlSi3O10)(OH)2
mineral
Labradorite
Plagioclase Feldspar ((Na,Ca)(Al,Si)4O8)
mineral
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral
Quartz Pebble (Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline), KAlSi3O8
mineral