Flamed ( Thermalled ) This stone is gauged to + / – 1/8”. It comes in both nominal and full sizes. Flamed stone is produced by treating sawn material with a flame torch and water to add texture to the surface. Contact Us Today Bay Area Bluestone 170 Gary Place San Rafael, CA 94901 email@example.com Tel. (415) 453-2262 Fax.(415) 453-1863 Bluestone is know for it's durability, natural beauty and all while being an economical choice.