< back Perpetual Motion Solo Rotated 10mm Stacking Ring $2,100 18k yellow gold and amethyst. Design Insight: stack it alongside a multitude of our Rotated Solo rings or wear it alone to highlight its minimalist spirit. Product code: PM-RN-SOLO10ROT details Set in Motion: an amethyst spins inside a ‘cutout’ gold cube that is ‘balanced’ perfectly on one corner. 10mm amethyst sphere Size & Fit Cube Length: 1.1cm (approximately) Ring Measurements can be found in the link below US sizing Product code: PM-RN-SOLO10ROT View Disclaimer size guide select color yellow gold w/ green tourmaline Yellow Gold w/ Amethyst Yellow Gold W/ Malachite yellow gold w/ pink tourmaline Select Size add to bag Share Twitter Facebook Email Pinterest Custom Order