Cat Miraculous

Adrien's ring is a magical ring that, whenever Plagg inhabits it, transforms Adrien into Cat Noir.

Appearance
In general, the ring has a thick band with a circle surface surrounded by a lining with four pointed diamond shapes on each diagonal side. When Adrien isn't Cat Noir, the ring is silver and the circle is blank. But When Plagg enters the ring while Adrien transforms, it becomes black and a glowing green pawprint appears in the circle.