Terrific heart twin from the world's finest and most classic heart-twin calcite locality. This gemmy Calcite has a superb luster and very attractive striations along some of the faces, with characteristic red color due to minor hematite inclusions. Though complete on front and sides, it is admittedly contacted in the back - you don't see it, and it doesn't matter much to me. Overall, it is a true classic for both the species and location and a very RARE smaller sized specimen for the thumb collector!. 3 x 3 x 1.5 cm