The beauty of gems comes first in color. 加えて, transparency and luster are all its charms. Transparency refers to the ability of a gemstone to transmit light. Usually divided into: 透明, 半透明の, 半透明の, 半透明の, 不透明な. 透明性: easy to see through the light, clear bottom, the outline and details of the scene can be clearly […]
