Following the success of the original Gem, Roto Grip presents the Exotic Gem. This high-performance ball utilizes the pearl version of the MicroTrax coverstock and pairs it with the same Defiant LRG core. This core and cover combo produces a ball that will skid through the front part of the lane then dig into the middle of the lane then produce powerful continuation at the back of the lane. The Roto Grip Exotic Gem is a high-end asymmetric pearl ball that performs best on medium/heavy oiled lanes.