Rhinestone Christmas Tree Brooch Vtg Multicolor Givre Silver Tone Cupcake 2.75. Design: Lovely older Christmas Tree filled with multicolored rhinestones with a large round turquoise colored one in the center and peach/pink givre stones on ends and one faux pearl on top held in with a cupcake setting. Size: 2.75″ T x 1.5″ W. Features: Safety roll clasp on back. Condition: In good used vintage condition. See pics for details. New jewelry pieces added daily so check back often! Many vintage jewelry metals are hard to determine when not marked. I can only narrow it down for you by the magnetic quality of it. Here are the magnetic qualities in different metals to help you determine if this item will work for you. Cobalt, iron, nickel, neodymium, samarium, and gadolinium. Slightly Magnetic – Rhodium (nickel free & hypoallergenic). Non-magnetic – Gold, silver, brass, copper, zinc, aluminum, pewter.