The beauty of gems comes first in color. นอกจากนี้, transparency and luster are all its charms. Transparency refers to the ability of a gemstone to transmit light. Usually divided into: transparent, translucent, translucent, translucent, ทึบแสง. ความโปร่งใส: easy to see through the light, clear bottom, the outline and details of the scene can be clearly […]
