Unexpected finding of Egyptian blue emerged in Raphael’s fresco Triumph of Galatea at Villa Farnesina, in Rome. This pigment is the oldest man-made blue, dating back to Egyptians who manufactured it first and whose occurrence was thought to be lost with Romans. Thanks to advanced imaging techniques it has been possible to non-invasively map its distribution throughout the frescoed surface and to obtain a non-invasive imaging stratigraphic analysis indicating whether pure painting layers, mixtures or overlapping occurred. Egyptian blue identification on Raphael’s Galatea is so far the earliest of sixteenth century, and could be the first step towards its tracking in Renaissance, demonstrating that non-invasive techniques are a mandatory step not only for materials identification but also for understanding art history and its dynamics.

在罗马法拉西纳别墅（Villa Farnesina）的拉斐尔（Raphael）的加拉塔（Galatea）壁画胜利中出现了埃及蓝色的意外发现。这种颜料是最古老的人造蓝色，其历史可追溯到埃及人，埃及人首先制造了这种颜料，人们认为这种颜料的出现是罗马人所为。多亏了先进的成像技术，才可能无创地绘制其在整个壁画表面的分布，并获得表明是否发生了纯涂漆层，混合物或重叠现象的无创成像地层分析。拉斐尔的Galatea上的埃及蓝色标识 到目前为止，它是16世纪最早的作品，可能是迈向文艺复兴时期的第一步，这表明非侵入性技术不仅是识别材料的必不可少的步骤，而且对于理解艺术史及其动力学也必不可少。