"Design a minimalistic and innovative ring incorporating Swarovski's 'Pop Heart' crystal with a moving feature. The ring should have a geometric shape, such as a circle or square, and should be unique and never-before-seen. The crystal should be enclosed in a transparent, movable space similar to Chopard's 'Happy Diamond' collection, but adapted to the new design. The ring should combine elegant simplicity with functional movement and be feasible for construction."