Emerald: the most valuable beryl, the most precious gemstone
Leading researchers offer insight into many of the aspects of the world of emeralds: What is emerald? How does emerald form? Where is emerald found? Where are the richest deposits? Is it possible to determine the origin of emerald? What separates green beryl from emerald? How are emeralds created in the lab and how can they be recognized? Plus etymology, history, legendary giants, local finds and more... extraLapis English No. 2 provides a comprehensive look at this magnificent gemstone.
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The Worlds Top Producer 36
Minas Gerais Bahia Ceard Gois
Egypt Nigeria Tanzania
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absorption actinolite Afghanistan albite amphibolite apatite aquamarine autoclave beryl beryllium black shales Brazil c-axis calcite carats carbonates cavities Chivor chlorite chromium chromium and iron chromium and vanadium Colombia Colombian emeralds colored by chromium colorless Coscuez Dietmar Schwarz dolomite elements emer emerald color emerald crystals emerald cut emerald deposits emerald formed emerald mining emerald producer emerald-bearing emeralds occur Erica van Pelt feldspar Figure Finds fissures fluid inclusions fluorite fractures gem quality gemological gemstone Giuliani gneiss Goias granite green beryl growth structures Grundmann Habachtal Hiddenite hydrothermal IG-Farben Incl lenses metasomatic mica million years ago mineral Mingora molybdenite muscovite Museum Muzo natural emeralds Nigerian emerald nutrient open pit Pakistan pale Panjshir pegmatites phenakite phlogopite schists plagioclase production pyrite quartz rare rocks Sandawana Santa Terezinha seed plates serpentinites spectra synthesis talc talc schist tourmaline ultrabasics vanadium veins vugs weight percent zone