Description Looking for a pattern that makes a real statement? Proline’s Large Ashlar New England Slate Groutable offers the popularity of both Slate and Ashlar Stones with a larger, bolder size stone. This stamp is also groutable, for a true natural stone appearance. Additionally, we offer the Large Ashlar New England Slate Groutable Package that includes the Proline Recommended Stamping Tools and a selection of Accessories needed for your project at a package savings.