The Crystal impling jar is the result of successfully catching a Crystal impling, the rarest and hardest to catch impling in Impetuous Impulses. It is also possible to obtain a jar from the Motherlode Maw.
If a player catches an impling without an empty impling jar, they would automatically receive the loot instead.
As can be done with all Impling jars, the Crystal impling jar can be traded in singularly to Elnock Inquisitor for three empty impling jars. This is not recommended, as Crystal impling jars are worth considerably more than three empty jars.
Selling this jar on the Grand Exchange will make a profit of 635,762. Trading this jar to Elnock for 3 empty jars and selling the empty jars on the Grand Exchange will give a profit of −635,176.