PAA- I hear your tayne from the gemara in menachos.
my point about bais halevi is that all he needed was a sibah why it stopped and to this the ramban is an answer since he says there were gezeiros.
???? ??”? ????? ???? ????? “???? ????????” (?’ ??) “…??? ??? ????? ??????”? ???? ????? ??????? ?? ?????
???? ??? ????? ???? ???? 1612 ?? ????? ????? ????? ????”? ??? ????? ?????? ???? ??”? ????? ????. ??? ???????? ???”? (??”? ?) ?????”? (??”? ???”?) ????”? (????? ?.).
?????”? ??? ????? ??? ???? ?????
as for not using expensive things as a ziyuf, what about hamotzi bashuk, because al kol ponim murex was heavily used, so you have to be choshesh that it is murex. besides if it isn’t kla ilan, rav achai should still be choshesh for it