With the help of magnifying glass, microscop și alte instrumente, the magnification inspection of colored gemstones is mainly to observe the internal and external characteristics of the jewels and jade. Internal features include: incluziuni, structura, textură, benzi de culoare, stains, etc.; external features include: original crystal planes, zgârieturi de suprafață, ports, and open slit lamps. Inspecție de mărire […]
