Victorian Horseshoe Pin Equestrian Brooch 9ct Gold Mine Cut Diamond. Circa 19th century this is a very old, very sweet symbolic little equestrian collar pin. A lucky horseshoe in 9ct. gold with a mine cut diamond in its middle. It has a secure safety pin type clasp. Small and dainty at approximately 1" long x 1/2". Unmarked, which is not unusual for antique jewelry. This little treasure has some minor discoloration associated with it's age. Beautiful to complete an equestrian outfit or to wear on a hat or scarf. Wonderful gift for an equestrian rider.