I made a necklace with a gold tone chain and a beautiful marked OTC, vintage Smthsonian Institution rhinestone Christmas tree brooch. Dazzling rhinestones in a combination of cuts; chaton, baguette, & a teardrop in green, red, blue, gold, & clear. 22K plated measures approximately 2 1/2 inches high x 2 1/2 inches wide. the brooch can easily be removed from chain with some jewelry pliers. Also brooch is still wearable and pin closes.