This is a lovely antique brooch.
Sterling silver, French silver marks.
In a shape of a flower. With Rhinestones or "Diamonds" from Alençon, in Normandy.
Dimensions: Length 8 x 3,5 cm. Weight: 13 grammes
Period: 1850 - 1870.
PERFECT CONDITION
Here is a converter inches / cm to help you with the dimensions.