With the help of magnifying glass, mikroskoop en ander instrumente, the magnification inspection of colored gemstones is mainly to observe the internal and external characteristics of the jewels and jade. Internal features include: insluitings, struktuur, tekstuur, kleur bande, vlekke, ens.; external features include: original crystal planes, oppervlak skrape, ports, and open slit lamps. Vergroting inspeksie […]
