hello again Lou Hill
I did just send a mail about my interpetation on my thoughts afer
seeing the pictures of the Abalone pearls. I love pearls and was
intrigued, I wanted to know more about the pics I seen. I didn't
come to a real anwer to what is "inside" your pearls but I found
abalone pearls, some irregular shapes like yours and all had these
intense colouring. Maybe you'll find thes sites interesting.
after an immage search for abalone pearls I found this site with
these two pics on them
good luck and check out a google (images) on abalone pearl.