Posted on January 8, 2019 January 9, 2019 by WebsiteYellowPages.com Keystone Marble and Granite 1 2 3 4 50.000 CategoriesBuilding Materials LocationsCalifornia Bookmark Contact Information Business Name Keystone Marble and Granite Address P.O. Box 831, California 92033 Phone Number 7607653600 Fax Number 7607651283 CategoriesBuilding Materials Post navigationPrevious post: Harker SchoolNext post: Devo; Stevo