Enhancement Gems

Enhancement gems are an equip item recieved after completing Gem mine, you can only find 1-3 of these per gameplay in Gem mine, you may use them to enhance towers, equiping a tower with an enhancement gem gives the tower the following: (Note that you can't equip more than one enhancement gem on one tower.)
 * +10% Attack speed
 * +1 Popping power
 * +1 Layer removed every third shot
 * +1 damage to ceramics
 * +1 damage to MOABs
 * +10% range