Rings Classic Accessories 4u Rings. Some of these Rings can also be found in the various Classic Accessories 4u Sets. All Rings Plated in 2 Microns of Gold with Cubic Zirconia's & Swarovski Crystals. RING SIZES Size 5 15.5 mm Size 6 16 mm Size 7 17 mm Size 8 18 mm Size 9 19 mm Size 10 20 mm