Larvikite

Larvikite is sometimes confused with Black Moonstone, but is more similar in appearance to Labradorite, as the feldspar crystals in it flash silver. It was named in 1890 by Broegger, a professor at Oslo University, after the place where it was first discovered - Larvik in Norway. Larvikite found fame very soon after Broegger had registered his discovery, at the World Fair in 1890, where countries were asked to show their two best decorative building stones. Flashy Larvikite stole the show, and was named the favourite of the fair, and it went on to be used in the United Nations Building in New York, and Harrods in London.