View Fullscreen Cathy Waterman Women's Infinity Ring £5289 From Barneys New York buy now Get a sale alert The sales are still on. Save this item and we'll tell you when it goes on sale Details Cathy Waterman's platinum geometric four-way Infinity ring showcases white diamonds. 0.46 ct white diamonds. Platinum. 3mm to 11mm band width (approximately). Size 5.