- Apr 22, 2004
I was about to send my cobalt spinel to AGL for grading but it turns out that AGL has been bought over and is most likely to be closed, with the diamond grading side only remaining. I''m not sure if I want to spend mega bucks for AGTA or Gubelin because I only need it to be verified that it isn''t a synthetic. I know it isn''t but it''s always great to have confirmation from a reputable lab. What are the other good labs out there?