“Twinned Orthoclase from Karlsbad (Carlsbad). The Carlsbad twin name came from the Carlsbad locality in the Czech Republic. This Orthoclase also came from this locality and "guess what?": it is twinned by the Carlsbad law. A "type locality twin" from an old glorious European locality.Size:6 x 3.2 x 2 cm”