Spark Candy Ring Crossover Design with Swarovski Crystals. Specification: Finger Size: Rings are in 7 sizes (British equivalent; L,M,N,O,Q,R,S) Please refer to size guide chart here to find the equivalent size for your country. Gift Box: This item comes with a complimentary gift box. Superior design & quality: Designed by Spark in 925 sterling silver using Genuine Swarovski Crystals. Hypoallergenic Jewellery: We decided to make all our jewellery hypoallergenic by removing nickel and other metals that may cause allergic reactions. Be assured that our jewellery is safe for you.