Welcome to our Customer Service Center. Here you can initiate requests for exchanges, returns, jewelry repairs, warranty and guarantee services, or change an existing order. Please use the links below for obtaining assistance with your inquiries. If you have reviewed each section and are unable to find a category that suits your needs, please send an email to info@ziamond.com. Live chat and telephone representatives are also available Monday through Friday from 10am to 5pm eastern standard time. Telephone representatives can be reached by dialing toll free 1-866-ZIAMOND or 1-866-942-6663. International customers can dial 954-794-0460.