You're probably familiar with the parable recorded in the Bible about the traveling pearl merchant who sold everything he had to buy one pearl of high value. What kind of pearl would it have been?
Here is a picture of 3 pearls from the Persian Gulf -the oldest and longest and most productive pearl beds, ever. And now they have had quite a nice "rest" for 70 years.... as a Wise man said on another thread.....
Are there different species in different parts of the Gulf? I don't have my Strack, yet, but I think Pinctada Radiata is the primary pearl mollusk in the gulf.
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/18578/5546/1122/back_issue_article_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.