Thank you for visiting Keystone. We are a Staffordshire based independent stonemasonry company. We offer elegant memorials at affordable prices with a personal touch to our service. Keystone Granite & Memorials are members of NAMM (The National Association of Memorial Masons) standards. Also all our new memorials come with a 10 year warranty & a free bouquet of flowers for the grave just as a thank you from us here at keystone.