When ordering online, it is advisable you check your ring size at your local jewellers. Alternatively, you can determine your ring size at www.findmyringsize.com. Please note that our site uses German ring sizes. We are more than happy to advise you, but cannot be held responsible for determining your ring size.
As everyone likes wearing their rings a bit differently, depending on the shape of their hands and tightness/looseness preference, it is probably best that you determine your size by trial and error, available free of charge at your closest jewellery store.