This idea is perfect for a dynamic display of small jewelry items with a very modern feel. They could even transport inside of one another. Large triangles on the back wall of your booth could continue with modern motif.
Instead of hiding rings away in a drawer, stack them on icing tips purchased from a bakery-supply store. Put these next to the kitchen sink - secured with reusable plastic adhesive to keep them steady - to safeguard rings when washing, too.