Cloisonné Enamel Monarch Butterfly Sterling Silver 24k Gold Wash Brooch. Vintage new old stock cloisonné enamel brooch portrays a Monarch butterfly in sterling silver with a 24k gold wash. The brooch measures approximately 2 inches long by 1 1/4 inches wide. It is marked S.925 and crafted by Chinese artisans. The enamel colors are Jet, Citrine, Reddish-orange and Chalk White. This piece is in excellent condition and is a special piece to add to any collection.