< back Perpetual Motion Simple Curve Necklace $2,990 18k yellow gold and onyx. Product code: PM-NC-SCRV details Set in Motion: the three custom-cut spheres gracefully slides from side to side. 6mm onyx spheres Size & Fit Chain Length: 18" Pendant Width: 3cm (approximately) Product code: PM-NC-SCRV View Disclaimer select color yellow gold W/ rubellite yellow gold w/ green tourmaline Select Chain Length add to bag Share Twitter Facebook Email Pinterest Custom Order