Mineral (Gemstone Variety Of Beryl)

Rough Emerald

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Pegmatite

Granitic Pegmatite

Quartz-rich pegmatite

Granitic pegmatite, composed mainly of quartz (SiO₂) and feldspar, with dark mica or other accessory minerals

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities

Granitic Pegmatite

Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)

Pegmatite with quartz, feldspar, and mica

Granitic pegmatite, chiefly quartz (SiO₂), feldspars, and mica

Raw greenish beryl (probable aquamarine)

Beryl, Be₃Al₂Si₆O₁₈; blue varieties are aquamarine

Quartz–feldspar pegmatite (probable)

Coarse-grained granitic pegmatite, mainly quartz and feldspar, with possible mica

Quartz-bearing feldspar pegmatite (likely with mica/tourmaline)

Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with dark mica or tourmaline

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Apatite

Fluorapatite (Ca5(PO4)3F)

Tumbled green beryl or glassy green gemstone

Likely beryl, Be₃Al₂Si₆O₁₈; possibly treated emerald or synthetic glass

Colorless faceted gemstones, likely quartz (rock crystal)

Quartz, silicon dioxide (SiO₂), trigonal crystal system

Pegmatite with mica and feldspar

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica, possibly with tourmaline or sulfides

Emerald

Beryl (Be₃Al₂(SiO₃)₆) with Chromium or Vanadium impurities

Clear Quartz (Faceted) / White Sapphire / Goshenite

Silicon Dioxide (SiO2) / Aluminium Oxide (Al2O3)

Rough Dark Green Sapphire

Corundum (Al2O3)

Quartz–feldspar pegmatite with iron-oxide staining

Granitic pegmatite; predominantly SiO₂ quartz with K-feldspar/plagioclase and likely Fe-oxide minerals

Tumbled emerald chips

Emerald, green beryl (Be₃Al₂Si₆O₁₈), colored mainly by chromium and/or vanadium

Chrome Diopside

Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities

Green faceted gemstone earrings

Undetermined; possibly green glass or synthetic emerald-type material, rather than identifiable natural emerald

Porphyritic granitic pegmatite

Granitic pegmatite, composed chiefly of quartz, feldspar, and mica

Quartz-rich pegmatite

Granitic pegmatite, composed mainly of quartz and feldspar with dark mica or other accessory minerals

Pale green rough beryl (possibly aquamarine)

Beryl, Be₃Al₂Si₆O₁₈; aquamarine is blue to blue-green beryl

Citrine

Silicon Dioxide (SiO2) with iron impurities

Pegmatite (Granitic)

Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)

Granitic Pegmatite

Pegmatite

Granite Pegmatite

Phaneritic Igneous Rock

Pegmatitic Granite

Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)

Pegmatitic granite

Granite pegmatite, chiefly quartz, potassium feldspar, plagioclase, and biotite or other dark mica

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz-rich pegmatite (likely quartz–feldspar–mica specimen)

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica

Quartz-rich pegmatitic rock, possibly altered granite

Quartz–feldspar pegmatite; probable composition of quartz (SiO₂), feldspar, and mica/secondary alteration minerals

Quartz-rich pegmatite fragment

Pegmatite composed chiefly of quartz (SiO₂), with probable feldspar and mica inclusions

Blue Apatite

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Pegmatite with feldspar, quartz, and dark mica

Granitic pegmatite; commonly quartz (SiO₂), feldspar, and biotite or other mica

Emerald in Matrix

Beryl (Be3Al2(SiO3)6) embedded in schist or pegmatite host rock

Opal and emerald-like gemstone jewelry

Likely common precious opal (hydrated amorphous silica, SiO₂·nH₂O) paired with green beryl or quartz; metal setting obscures definitive identification

Quartz–feldspar pegmatite

Granitic pegmatite, chiefly quartz (SiO₂), feldspar, and mica

Pegmatitic granite with lilac lepidolite and mica

Granitic pegmatite; quartz–feldspar–mica rock, possibly containing lepidolite (lithium mica)