With the help of magnifying glass, микроскоп и другие инструменты, the magnification inspection of colored gemstones is mainly to observe the internal and external characteristics of the jewels and jade. Internal features include: включения, структура, текстура, цветные полосы, пятна, и т. д.; external features include: original crystal planes, царапины на поверхности, ports, and open slit lamps. Проверка увеличения […]
