About 43 of the beads are the 7mm size, they then graduate bigger to the 14mm which is in the middle. Larvikite is a type of spectrolite. Larvikite is also known under the names Norwegian pearl granite, blue pearl stone and blue moonstone. The stone is found in Larvik, Norway and has been used for building material. This is why sometimes it gets confused as labradorite and some use the name black labradorite.