On the Scarlett peninsula near Port St Mary, a distinctive black limestone known as Poyllvaaish or Pooil Vaaish 'marble' has been quarried since at least the early 1700s (documented uses include St Peter's Church, Liverpool in 1704, large flag shipments in 1705, and named tombstone/flag suppliers arriving by 1713). Capable of taking a polish, it was prized for chimney-pieces, tombstones and decorative stonework, and was used in Castle Rushen and the Old House of Keys. A popular claim that it was used at St Paul's Cathedral is, per Manx Notebook's own catalogue entry, 'largely mythical' - the real connection is a narrow 1873 restoration purchase for the Cathedral's North Portico; a further claim of use at Hampton Court's Chapel Royal was not corroborated by any source checked. Quarrying continues on a small scale today.