I also believe the central emerald and diamond cluster was replaced by the round(ish) sapphire currently in the brooch.
My questions are: was the central emerald after the alteration perhaps used to create this emerald necklace? Does anybody know? Or is this another Asscher cut / square emerald?
--Previous Message-- : First the brooch contained a square emerald : and pearl pendant: : : : : The central emerald and diamond cluster is : then replaced with this round sapphire set : in diamonds: : : : : And this is what we have today: : : : : --Previous Message-- : I believe it was a square(ish) emerald but : was : later replaced by the round sapphire and had : the pearl drop removed. : : --Previous Message-- : I've cracked my head on this one as well but : it is the emerald tiara. What interests me : is that the brooch with the pearl actually : is a sapphire and not an emerald. : : : : :