A topic that often comes up is whether a particular gemstone is or isn’t treated. In a sense, humans alter all gem materials after they are found in the earth in order to prepare them for use in ...
Greater amounts of colorless sapphire—promoted primarily as diamond substitutes, but also as natural gemstones—have been seen in the gem market during the past decade. In the absence of inclusions or ...
They are being promoted under Local 100, the Ministry of Culture, Sports and Tourism’s campaign to highlight Korea’s lesser-known cultural and natural gems outside Seoul. Damyang’s “Three ...