1 oz .999 Pure Copper Comes in a 2" x 2" clear vinyl protective presentation sleeve Diameter = 39 mm (1.54 in.) ~ Slightly larger than a US Silver Dollar Thickness = 2.5 mm (0.098 in.) Gross Weight = 1 Avoirdupois ounce (28.35 grams) These were created to commemorate the summit between Donald Trump and Kim Jong-Un on June 12, 2018. These make great gifts for friends and family members!