1. Market: sapphire blue is the highest color among blue gems. Therefore, it is very popular in the jewelry market, with a price of 3,000 to 5,000 yuan per gram. The price of color-changing sapphire ranges from 1 10,000 to 20,000 yuan. In contrast, royal sapphire is more expensive.
2. Color: The color of royal sapphire is also unique. Different from other blue gems, it has a very unique gradient tone, which is unmatched by color-changing blue gems.