Show WHERE WE FIND EMERALDS I 1 bi famous muzo mines in the re republic ubilla of colombia produce fonest Fl nesti nest gems t 4 the finest emeralds are found in ill I 1 the republic of colombia colomba at the f fa amous muzo mines minai in the department or of boyaca seventy miles north vj b y west of bogota which have been worked since 1558 the spaniards mined there in the middle of the century but withdrew afatia after a time owing to continual fighting with w ith the indians with the result that for awhile the locality of ahe was unknown they are now worked by an ail english company in partnership with the government the Th eeme emeralds r at muzo occur in calcite veins running through black carboniferous limestone in all directions and at att all angles often the limestone is ia covered er ed with earth in which bushes and trees are growing this has to be cleared before prospecting Is possible when calcite veins have been located the side of ahe hill la Is dug awik away in banks usually by indians whose chief tool Is a steel bar forged to a point at one end the pieces of cal cite vein are examined superficially for emeralds and are then set aith for convey conveyance anco to the sorting shed where a detailed examination Is made and tile the emeralds are divided into fifteen grades de according cording to color tra transparency afa pa rency size freedom from flaws and aad BO be on t |