Emerald, the English name of emerald, comes from the ancient Persian word Zumurud, which means green stone. Later, it evolved into Latin Smaragdus, which became today's English name around16th century. Originally translated into wooden thorn, it was translated into jade in The West Chamber, which has been passed down to this day. Emerald is also called "green" and "emerald". The ancient Greeks called emeralds "luminous" gems. Nowadays, emeralds have become priceless because of their great difficulty in mining, many natural cracks and small shape.

Emerald, known as the king of emeralds, is a kind of beryl containing chromium, with green color and vitality, so it has always been deeply loved by treasure lovers. But as we all know, emeralds not only have many varieties, but also many producing areas, so how to choose emeralds has become a top priority.