With a combined 30 years of Stone Veneer Production, Marketing, and Sales Black River Quarries' goal is to produce a quality product, while exceeding all industry specifications, safely and in a innovative way. Starting with real Vermont Granite and Mica Schists (a metamorphic rock that contains quartz). Located in the Quimby Mountain Stone Quarry, in Beautiful Sharon Vermont it sits just 3 miles south of Sharon Town Center on RT 14.