Berylline is English, which comes from the Greek beryllos (emerald) and gradually evolved from the Latin beryllos.

Emerald in English comes from Persian zumurud (emerald), and later evolved into Latin smaragdus, which was misrepresented as esmeraude and emeraude, and later became an English spelling form. Chinese is transliteration. Tao transliterated as "supporting the wooden thorn" in his "Dropping out of Farming". The old fashions in China have names such as "mother green" and "water-helping green". Hong Kong is also called "Lu Zongqing".

Emerald, known as the king of emeralds, is one of the most precious gems (May Birthstone).

Emerald is one of the oldest gemstone varieties and was used as jewelry in ancient Egypt. Cleopatra (Cleopatra's name), a famous mine at that time, has been exhausted by a large number of mining.

Emerald is a rare and flawless gem. In fact, it can be said that there must be some cracks and inclusions in emeralds, and the types of cracks and inclusions are very complicated, even called "garden" by researchers.

Too many inclusions will naturally affect the value of gems, but for gem researchers, the inclusions of emeralds are rare samples. By observing different inclusions, we can distinguish different origins and growing environments of gems.