I have a diamond from a previous marriage that is inscribed with the number 229103UC. I assume this is a lab report number, but which lab? the online tools from GIA and AGS only are valid for reports after jan, 1, 2000. this ring is from 1989 so the diamond is that or older. I am wanting to sell the diamond and would rather get a copy of an existing report rather than send it out for a new grading if possible.