Just a little extra to some of the posts , Paua shell doesnt need a
layer of laquer or resin over the surface , it can be easily polished
with tin oxide on a muslin buff - or , I guess , linde A . Either
side can be used also , the outside is quite flambouant under the
rough outer layer , while the inside has the same colours in a more
muted fashion All the best , Philip Wells @Wellsie