Maintenance A practice to remember For all the discerning owners of K.M. Oli Mohamed fine jewellery, the practice of presenting the Certificate of Authenticity is highly encouraged for every maintenance visit and repair work conducted at any of K.M. Oli Mohamed showrooms. The practice will not only allow both owners and K.M. Oli Mohamed personnel to keep track of the maintenance record, but also let K.M. Oli Mohamed jewellery experts to advise other services that can assist the owners to maintain the pristine state of the purchased jewellery. At purchase time, it is important that the owners verify the information filled out by K.M. Oli Mohamed personnel to ensure a smooth progress on future maintenance requests and repairs.