This pin features black hills gold. The pin weighs 2.7 grams. This pin was made circa 1860. Our collection of vintage and estate jewelry is unique and timeless, makes a great gift, and will be treasured forever. Our GIA-certified Gemologist, Christopher Robuck, has over 40 years of experience in the jewelry business. He thoroughly cleans and inspects each piece, and makes any necessary repairs. When you purchase a piece of our estate jewelry, you can be assured that you are getting an affordable piece of jewelry. Our goal is to price them at 30% to 50% off the regular retail price.