I've studied pearls for several years and been through GIA's pearl program (limited as it was), but I don't recall learning much about black Akoya pearls. I saw another thread on this site in which a member said that all black Akoya pearls were dyed; however, I birthed (harvested) one directly from the shell and out of the sac today myself, so I know it was not dyed. That post was several years old . . . Does anyone have more current, accurate information on the rarity (or lack of) in black Akoyas? I'd be so grateful to learn more.