We recently bought a few pieces of Ermani Bulatti jewelry thru an internet reseller. Do all or each of your jewelry have the 'ERMANI BULATTI' marking with the R (registered) behind it? We have acquired several Ermani Bulatti jewelry pieces in the past 15 years and very satisfied with your product, but this recent purchase appears questionable,no markings on 2 pieces and questionable quality. Are you aware of anyone producing reproducyions or fakes? Thank you.