Quote:
Originally Posted by Caitlin  Thay are saying that orient is a type of overtone? |
Well, at least that's what I am reading in those two words with a semicolon in-between
I do not have GIA's official pearl course to see whether what the lab preaches matches this practice
Besides, I have been wondering whether there isn't some connection after all, since both are optical phenomena caused by slight variations of the nacre structure within and between species etc. Inasmuch, the format of the report would simply indicate that the grader implies a quantitative (rather the qualitative) distinction between the two... Which could just make both technical and commercial sense after all; however, this is just some guessing: I have not seen any equivalent reasoning in any GIA publication so far. 'Still looking.