Piercing Basic is an 
Agility Gem. This Utility type Gem can be slotted in the fourth slot of the Agility attribute tree for a total 19,000 
Gold cost.
Slots 1/2/3/4/5 are at nodes 1, 7, 13, 19, 25 respectively
How to obtain[]
Piercing Basic is obtained at level 1.
Piercing Basic can currently be earned only through chests. Higher rarities have a lower chance of dropping.