Thank you, Pattye, for writing and getting this splendid answer. We learned so much more than expected.
I want to point out that Jacques removed his thread after Dave's first post, assuming that Dave was right on first examination of what was said. (Even Dave would have said that more investigation was warranted, rather than dismissing the pearls out of hand.) So I reactivated the thread. What a wonderful payoff!
Pearl-Guide is a terrific place where we are all free to challenge assumptions and freely discuss the aspects and potentiality of any and all pearls. And we get to share the beauty of pearls through our fabulous photos. We are a community and I hope to see more interesting subjects explored in the future.
I started my day by going to a tourmaline mine two hours away, then I rushed back, changed out of my dirt-encrusted clothes and headed over to GIA for the "Responsible Sourcing Panel", which was awesome. Then I talked to Robert Weldon about the photography for a G&G article on John Tu's pearls, and then I came home to this wondrous thread! What a great day!!! Thank YOU!