Spend silver to enhance your equipment to improve your basic stats. To get started, tap the "Enhance" button at the bottom. You can select five of the six slots before you must wait for the cooldown timer to finish. The Mine is another way to make your gear better. You can spend silver to dig for gems that be inlaid into your weapons and armor. These work together with enhancement. The higher the level of your gear, the more gem can be inlaid.