Diamond Crystal in the Earth's depths of the mantle magma, the environment is complex, diverse, temperature pressure is extremely high, after billions of years of geological changes, its interior inevitably contains a variety of sundries or flaws. The color, number, size and location of these inclusions have different effects on the degree of diamond cleanliness.
The clarity of the diamond usually uses 10 times times the magnifying glass to the inside of the diamond, surface defects and their influence on luster classification of the net level of the Mosaic diamond, according to the Chinese National inspection standards for the LC, VVS1, VVS2, VS1, VS2, SI1, SI2, P1, P2, P3 a total of 10 levels. Diamond Mosaic has been divided into excellent, good, good, good, generally 5 levels. P-Class drill is also called I-level drill. P-level drill below generally not as gems with diamonds, so generally only to P-class, no longer divided into p1/p2/p3.