Very Very Slightly Included Diamonds (VVSI) Category Diamonds have Very slight inclusions. The naked eye cannot see the inclusions found in the VVS category. The VVS category is divided into 2 grades, the first VVS1, and the second VVS2. VVS1 grade refers to a higher clarity grade than the VVS2 grade. VVS category diamonds are very beautiful and shiny. Visit our online store to learn more about and buy VVS-grade diamonds.