I have to confess I don't know what knowing Mr Munn personally has to do with this tiara. I can't claim a personal relationship with Mr Munn myself, though I have corresponded with him on some questions regarding jewelry after reading his fabulous book. He always answered my questions, the last one about QV's emerald tiara, and I found him a delightful, thoughtful gentleman.
As a lover of aquamarines, make sure to check out the pictures I posted on the Paley thread.