Estimate work brooch

of silver adorned with three green chrysopras and two carnelians.
The socket holding the pendant is probably not the original.
At the top there are two small "eyelets" so that the brooch can be attached to a chain and thus used as a pendant.
The brooch is stamped AM for A.Michelsen A/S Copenhagen F.
A. Michelsen is known for a large and wide production but it is rare to see fine jewellery from the company.

Width: 6,5 cm