... (round) in the lower left hand corner? Well, I have five examples in perfect condition with a fully-blown deep burgundy rim which is free of any blemish or inclusions. They're 29mm (1-1/8")... and I'm asking $7.50 each... A bit small, but still a very beautiful example of a mother-of-pearl chip.

Did you know that the interior shell of the pearl oyster is the same substance as the pearl; calcite and calcium carbonate...?

JB