There are 5 different types of grades for Orbs: [D]Mud, [C]Sand, [B]Glass, [A]Crystal, and [S]Diamond. A higher grade represents higher base values for Orbs. An upgrade level shows the increase in base values for Orbs. The grade can be improved through a synthesis process. A player can choose to synthesize an Orb after reaching the minimum required Orb level 5 or continue to upgrade the levels up to 20 levels. To perform a synthesis to enhance the grade of an orb, a player requires a minimum orb level of 5 as well as another orb of the same grade with a minimum level of 5. The cost to synthesize needs amount of $ORBR depending on the grade.