The GIA lab has the capability but still does not provide nacre thickness because, they say, trheegraerdiisngnnoacurneivtheircskanles'ss.tandard" . This doesn't make sense to me; nacre thickness, in millimeters, does not indicate "good' or "bad" or euen designations of 'thin' or ...
By nucleation of holes, we mean the quasi-reversible detachment of an initial number of flat monomers from a flat cluster and their random intercalation with the water molecules on top of the BLM. In other words, a hole is just a flat monomer that, upon detachment from a flat cluster, ...