Description This is a completely natural weather worn Barite Rose Rock Crystal formation with rose petal formations from the world-famous Norman, Oklahoma area. Fun Fact… Old Timers who were Rock Collectors….used to call these weather worn Barite Rose Rocks “Oklahoma Walnuts”. Through the years we have run across many old timers who all new them by that name…. now you can own a piece of rockhound history with your own Oklahoma Walnut! This Specimen weighs 1.58 oz (45 g) and measures 1.4 x 1.1 x 1 inches (3.7 x 2.8 x 2.5 cm)