Dolerite (Rowley Rag) quarried mainly from the large dolerite quarries on and around the Rowley Hills, and then dressed in nearby stone yards and works in Dudley, Old Hill, and Blackheath.
Worked by many small operators through the 19th century, later consolidated by The Rowley Rag Stone Co. Ltd. Some was also finished in Birmingham Corporation’s own yard at Montague Street, Bordesley, for city paving schemes.