It is near the entrance to Knight Inlet just east of Turnour Island at the junction of Clio and Chatham Channels.
The name is believed to have derived from a visit by a boat, believed to be HMS Amethyst, carrying Lord Dufferin, then Governor General of Canada, and his wife which carried the viceregal couple on a voyage up the coast to Metlakatla in 1876.
According to one of the crew, a Patrick Riley, Amethyst's crew performed regularly as a troupe of "minstrels", white people made up in blackface, who provided entertainment for shipmates and visitors, and the name likely commemorates a performance in these waters.
Bones Bay and Sambo Point nearby are related names, referring to stock characters in minstrel shows.
This article about a location on the Central Coast of British Columbia, Canada is a stub.