With the help of magnifying glass, microscópio e outros instrumentos, the magnification inspection of colored gemstones is mainly to observe the internal and external characteristics of the jewels and jade. Internal features include: inclusões, estrutura, textura, faixas coloridas, stains, etc.; external features include: original crystal planes, arranhões superficiais, ports, and open slit lamps. Inspeção de ampliação […]
