Crystal Listing is for ONE (1) Orthoceras Fossil Mortar and Pestle (RK6A-67). STOCK PHOTO. Each Piece will slightly vary in size, weight and other characteristics. Approx. Measurements: 4.625-4.75 tall x 4.25" wide Approx. Weight: 1.835kg Sure to impress, this will be an amazing addition to your home decor! Makes a beautiful gift as well! Orthoceras is known to be the fossilized remains of an extinct marine animal that is around 400 million years old. Orthoceras is said to reduce stress and anxiety. It is also said to give confidence in the stone holder and help depressed people out and makes them emotionally stable. *** Disclaimer *** Some of our listings may contain spiritual properties of stones.