Russian painter, Mukhin stated that he tries to paint close to the culture that the church belongs to. He explained that in 1994 his first idea came to decorate Saint Sava. As the church encloses an immense space, he stated that for him a golden decoration was the only possibility and that it signified the Transfiguration of Jesus. His main task, he said, was to make the church interior shine from its golden surfaces, he as author saw it as symbol to transfiguration. The impression of the light as a medium of sacral illustration will also be enhanced by illumination of certain scenes according to the church calendar. An impulse in the lighting will change from warm to cool tones, dependent on the religious feast. The smelt of the Tessara was made in Moscow and for the golden and silver Tesserae, pure gold and silver were used. Despite having worked in the Moscow Cathedral of Christ the Saviour, the task in decorating Saint Sava was of different magnitude, as the dome and size of scenes are much larger and the artistic media more complex. Structural implementation Realization of the mosaic works began on 28 September 2016 with the visit of Hilarion, director of the church Foreign Office in the Moscow Patriarchate and chairman of the Russo-Serbian commission at the Russian Academy. Zurab Tsereteli, Nikolaj Mukhin, Yevgeniy Maksimov and the acting director to the support of UNESCO, Manana Popova, presented the approved scale model. The first seating of the commission for the mosaic works to place on 17 March 2017 in the Moscow atelier where the mosaic artwork was created. Zurab Tsereteli as the coordinator of the artistic works expressed his gratitude to the authors at this first meeting. All mosaics were commissioned in the Moscow atelier in their original size, then cut and transported to Belgrade. The first ten tonnes of mosaics arrived in Belgrade on 3 May 2017. With a working platform at 43 m in the church, the mosaics were lifted with a specially constructed elevator. The artists of the mosaics were chosen from the Moscow School of Painting, Sculpture and Architecture in Moscow and the Repin Institute of Arts at the Imperial Academy of Arts in Saint Petersburg. Decoration The central mosaic in the dome depicts the Ascension of Jesus and represents Resurrected Christ, sitting on a rainbow and right hand raised in blessing, surrounded by four