Antique floral brooch in silver and Rhine stones

Charming old floral brooch from the Napoleon III period (1850-1870) and Rhine stones.
The central stone cut in the old way, the small stones are cut in pink.
Not showing a hallmark, the brooch has been tested as being made of silver.
The pin is made of metal, and appears to be a later modification.

Length: 2.95cm
Width: 2.66cm
Weight: 4.21g

Very good condition of the clasp which works securely.
Some traces of silver oxidation in the corners. Oxidation on the iron pin also.
The central stone has some chips (see photos). The wear and tear of time has removed the metallic film that covered its roof. We can still make out a little trace of it by looking at the stone from below.
The rose-cut stones are very slightly grayed.
The whole is in good general condition given the age of the jewel.
As the pin is made of iron, we advise you to keep it away from humidity.