What grade pearls did Mikimoto use in necklaces with silver clasps?
Hi, I'm educating myself about Mikimoto pearls, and I wondered if you know whether the older necklaces with sterling silver clasps have pearls that fit into the current Mikimoto grading system? I've read that the newer pearls with a gold clasp that has a smaller pearl are grade A1 or A+, and the ones with a clasp that has a diamond are AA or AAA. What about the silver clasp necklaces, which seem to be older? Thanks.