For gemologists and gem connoisseurs, Mogok (figure 8) must be experienced at least once in a lifetime. Gem mining likely began there more than a thousand years ago, and no other area on Earth has ...

Its main city, Yen The, is also known as Luc Yen, the name given to the ruby and spinel mining district described in the gemological literature (e.g., Kane et al., 1991; Pham et al., 2004a). The aim ...