This $20 coin is 99.99% pure silver, with a diameter of 38 millimeters and a metal weight of 31.39 grams. The reverse image by Canadian artist Maurade Baynton features colour that recreates the beauty of the bighorn sheep, as seen in its habitat along the Slopes of Canada's Rocky Mountains. The obverse features the effigy of Her Majesty Queen Elizabeth |I by Susanna Blunt.