With the help of magnifying glass, mikroskop dan instrumen lainnya, the magnification inspection of colored gemstones is mainly to observe the internal and external characteristics of the jewels and jade. Internal features include: inklusi, struktur, tekstur, pita warna, stains, dll.; external features include: original crystal planes, goresan permukaan, ports, and open slit lamps. Inspeksi pembesaran […]
