Thought I would share this on here as its beautiful, it belongs to my mother. The drop pearl has a grey tinge it has been questioned as to whether it could be a black pearl?
Thank you for rotating for me, the drop is not removable. It was bought in 1919 by my Great Grandfather for my Great Grandmother and has been in the family ever since.
Well with that family provenance, and from its appearance in the pics. I'd say your family has a fabulous natural pearl and diamond brooch.
Can you share the size of the large pearl drop with us?
The gray tinge of the drop leaves the pearl's origin wide open. At a guess I'd say the brooch may be French or Belgian, circa 1900, and the gray drop could be a natural South Pacific pearl from one of the French Polynesian territories of the time.
eta: the original poster's brooch is far more beautiful than the one above, in my opinion...just thought it was similar to this piece worn by the Queen.
It means, edited to add. I didn't want to imply that the Queen's jewelry was in any way nicer than the original piece! It just struck me as very similar in design, and very regal in look.