Amethyst - Uncommon Vintage This new extraLapis issue, in English, offers a comprehensive overview of amethyst. It provides a summary of its mineralogy, as well as descriptions of important finds and deposits. In addition to Namibia's famous amethysts and the well-known cactus quartz from South Africa, amethysts from Guerrero and Veracruz, Mexico, and Thunder Bay are described in text and accompanied by excellent photographs. German amethyst finds and discoveries from many other regions are also included. Highly recommended! 128 pages, many color photos and illustrations. Paperback. Size 30 x 21 cm. 2012. In English.