The mineral tourmaline is called “είδος πολύτιμου λίθου” by the Chinese and “multicolor stone” by the Westerners. It is a very popular gemstone. Στην αρχαιότητα, residents along the Mediterranean coast already knew about this magical gem. Σε 1703, the Dutch introduced tourmaline from Sri Lanka to Europe. According to legend, on a very hot summer day […]