Welcome to the board JR76! What a delightful jewel you have introduced us to! It is totally new to me. Is anyone else familiar with this brooch?

I have been trying to imagine which part of the jewel is en tremblant. Is it the central element?

If so, I wonder if it moves like the central element in the brooch seen in this video?





One little query -- are the diamonds 9cts in total or is the central diamond a 9ct stone?

Again a very warm welcome!