" 19th Century Butterfly Trembler Brooch"
An important 19th-century trembler brooch in gold, silver, rose-cut diamonds, and enamel, depicting a mobile enameled butterfly and a bow. It measures 7 centimeters high and 6 centimeters wide. The bow is set with approximately 1.50 carats of rose-cut diamonds. It weighs 24.9 grams. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato