Diamond enhancements are specific treatments, performed on natural diamonds (usually those already cut and polished into gems), which are designed to improve the visual gemological characteristics of the diamond in one or more ways.
Mandarin is the language of instruction of China and Taiwan. Mandarin is one of five major regional languages of China. It spreads wider than any other regional language, from the whole northern part of China down to Yunnan Province in the southwest corner of China.
Standard Chinese (known in China as Putonghua), a form of Mandarin Chinese, is the official national spoken language for the mainland and serves as a lingua franca within the Mandarin-speaking regions (and, to a lesser extent, across the other regions of mainland China).anguage laws of China do not apply to either Hong Kong or Macau and hence have different official languages (Cantonese, English and Portuguese) than the mainland. For example, Tibetan has official status within the Tibet Autonomous Region and Mongolian has official status within Inner Mongolia.