An early 20th Century natural pearl and diamond set question mark brooch

An early 20th Century natural pearl and diamond set question mark brooch, pavé set overall with graduated circular cut diamonds and suspending a drop shaped natural pearl in a diamond set cap. 6.5cm long.

Accompanied with report number 07131 dated 1st February 2013 from The Gem and Pearl Laboratory (London) stating that the part-drilled drop shaped pearl measures 8.8 - 8.9 x 13 - 14mm and is a natural saltwater pearl.