The Blocking Crystal has the power to block another crystal's power.
Description[]
The Blocking Crystal is several different shades of green and its shape is a mix between a octagon and a rectangle and has a metal cross around it and at the center of the cross is a classic shield symbol.
Appearances[]
- "Best Friends Forever" - Piper was trying to figure out how to make the effect of the Blocking Crystal last longer. She also used it to reveal that Lark was Master Cyclonis.[1]