Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Category
Browse mineral (gemstone variety of beryl) specimens identified by the Rock Identifier community.
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
Rough Emerald
Beryl (Be3Al2(SiO3)6 with Chromium/Vanadium impurities)
Amazonite in Pegmatite Matrix with Smoky Quartz
K(AlSi3O8) - Microcline (var. Amazonite) with SiO2 (Quartz)
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Pegmatite (Granitic Pegmatite)
Pegmatite (Quartz + Potassium Feldspar + Mica)
Granitic Pegmatite
Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
Gemstone bead necklace (likely citrine or yellow quartz)
Quartz, SiO₂; precise identification is uncertain because the beads are blurred and metal settings obscure them
Quartz-rich pegmatite (likely feldspar–quartz rock)
Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with possible mica/iron-oxide staining
Granitic Pegmatite (with Pink Feldspar and Quartz)
Pegmatite (KAlSi3O8 + SiO2)
Quartz-rich pegmatite fragment
Granite-family pegmatite; chiefly quartz (SiO₂), feldspar, and black mica (biotite)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Emerald
Beryl (Be₃Al₂(SiO₃)₆) with Chromium or Vanadium impurities
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Chert (Flint)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Mixed Gemstone and Mineral Collection
Mixed Silica and Carbonate minerals (SiO2, CaSO4·2H2O, etc.)
Quartz-rich pegmatite (likely feldspar–quartz rock)
Granitic pegmatite; predominantly quartz (SiO₂) and feldspar, with possible mica and iron-oxide staining
Pegmatite (White Granite variant)
Pegmatitic Granite (Quartz and Feldspar rich)
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Feldspar, and Mica)
Emerald in Matrix
Beryl (Be3Al2(SiO3)6) embedded in schist or pegmatite host rock
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Aquamarine and clear quartz
Aquamarine (Be3Al2Si6O18), Quartz (SiO2)
Tiger's Eye (Multicolor/Variegated)
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxides)
Red Tiger's Eye beads
Tiger's Eye (variety of Chalcedony, SiO2)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Granitic Pegmatite (River Rock specimen)
Granite / Pegmatite (composed of SiO2, KAlSi3O8, and NaAlSi3O8)
Quartz-rich pegmatite (possibly quartz–feldspar rock)
Granite pegmatite; chiefly quartz (SiO₂) with feldspar and minor mica/iron staining
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
Emerald
Beryl (Be₃Al₂Si₆Oထ₈) with Chromium/Vanadium impurities
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Bixbyite on Rhyolite
Bixbyite (Mn2+,Fe3+)2O3
Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
Granitic Pegmatite
Coarse-grained Granite (KAlSi3O8 + SiO2)
Amazonite
Microcline (KAlSi3O8)
Pegmatitic granite (likely feldspar–quartz–mica rock)
Granitic pegmatite; chiefly K-feldspar and quartz, with mica and iron-oxide staining
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
Quartz
Silicon Dioxide (SiO2)