Semya Stone owns one of the largest building stone quarries in New Hampshire. We provide a high quality stone product that will last generations from a zero waste mine located in rural New Hampshire. Formally owners of Allstone Corp, we pride ourselves on making the most of our beautiful, non-renewable resource. We have proudly provided stone products and jobs for 25 years. Family owned and operated, we will continue to do our best to respectfully share our beautiful stone resources with as many customers as possible. From wholesale dealers, to homeowners, Semya has the stone for your project, big or small.