Does anyone have a picture of a pinctada radiata pearl? Google failed me this time...
I did find an interesting result from googling pinctada margaritifera, though.
http://www.gia.edu/gemsandgemology/1...cle_detail.cfm
A "black-lipped" oyster producing yellow pearls is interesting. Of course, you pearl experts already knew this. Sorry, but all these Latin names are Greek to me.