Auto Facetor with Automatic Grain Seeking Logic ensures that it automatically blocks the diamond at specified angle. The Auto Facetor is based on automatic grain seeking logic and is able to block 8/ 16 pavilion facets. The Auto Facetor is made of quality grade raw material which ensures optimum durability along with long lasting trouble free service. Auto Facetor with Automatic Grain Seeking Logic is strong and rigid in construction and requires minimal maintenance.