A special piece of crystal with a spell engraved upon it, that spell is contained within the crystal itself. You can break the crystal as an action, breaking the crystal releases the spell with the following conditions:

• If the contained spell affects a single creature, the crystal must be broken either on or by the intended target. If the crystal is broken by accident the spell contained within targets a random creature within 5 feet. If no targets are in range the spell fails.
• If the contained spell has an area effect the point of origin is the crystal itself. In the case of lines, cubes, and cones whoever breaks the crystal chooses its orientation. If the crystal is broken by accident the spell’s orientation is determined randomly. 
• If the contained spell has an area effect and a duration longer than instant, such as Faerie Fire or Light, the spell’s area remains focused on the crystal, and if the crystal moves, the area of effect moves with the crystal. 

Notes: Utility, Consumable