The Special Shop appears every now and then, offering powerups for Jewels that affect certain game mechanics. The effects have a set duration, and immediately activates after purchase. While an effect is active, the player cannot purchase another item from the shop.
The shop is usually divided into several 1-week rounds. During each round, the player may only purchase a certain amount of each item from the shop.
The Weekend Shop, introduced in the 3DS v1.3.24 and Mobile v1.8.7 (October 18, 2016) updates, is based off of the Special Shop.