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.
The standard Chinese language is Standard Mandarin, the official language of both China and Taiwan and one of the six languages used at the United Nations. Hong Kong, Macau, and some other areas speak Cantonese. Native speakers of any Chinese dialect are referred to as sinophones. In addition to the many dialects currently classified, there are a number of regional dialects that have not been studied much. These include Danzhou, Xianghua, and Shaozhu Tuhua.