Hi Art, your research is taking you on a real journey
If you haven't already seen this, you are in for special treat
It's starts as a PG thread for a necklace called 'Stella Maris' which was put together by Douglas from the Sea of Cortez pearl farm that Pattye mentions as having 'Fair Trade' status
But it goes on over a couple of years, and has some great content (and stunning photos) and even a video
Hope you enjoy it !