Some minerals or gems are exposed to external energy such as X-rays, ultraviolet light, and other high-energy rays to emit visible light. When the external energy stops firing, the luminescence phenomenon stops. This phenomenon is called f…

The diamond was cut by a company in the United States, the company in the study of the diamond 6 months later to determine how to cut.This diamond has the oldest record of history, its earliest records can be traced back to 1304 years. Was…

Quality is good or bad determines the level of the value of diamonds, the same weight of diamonds, the more white color, the higher the degree of clarity, the more perfect cut, the higher its value. Specifically, the difference between the…

There are also many countries and regions capable of diamonds processing, mainly Belgium, Israel, the former Soviet Union, India, the United States and China. It is generally believed that the world's copy vanCleefArpels Lucky Alhambra bra…