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.
Language Family and Groups. Mandarin is part of the Chinese family of languages, which in turn is part of the Sino-Tibetan language group. All Chinese languages are tonal, which means that the way words are pronounced varies their meanings. Mandarin has âfour tones. Other Chinese languages have up to 10 distinct tones.