The EGL USA report number for my diamond says US UGxxxxxxxxx It has UG then nine numbers. Does anyone know what the UG means? I''ve spoken with a jeweler who says he''s seen 3 of these recently but doesn''t know what they mean. I''ve had the ring the diamond is in since 2001. I went onto the EGL website to try to look at the report for this ring since all I have is the little package the loose diamond came in and the website isn''t cooperating because of the weird number. Thanks.