high noon will rarely and I mean RARELY yield good results for shooting anything. Yes it'll hlep show off the pearl in your color for sure - but there are a few ways around that. Late in the day may still help you -- it'll tone down those highlights that get blown out in your pics and maybe show off the pearl still. I'm thinking in the 4 pm ish range here in colorado.
just thinking out loud, i just hate shooting at high noon - too difficult and hard to get good results