The Cathedral of Chartres (Cathédrale Notre-Dame de Chartres) is located in France. The Cathedral is traditionally discussed as an example of the French High Gothic style, and the history of this building is associated with the 12 th -13 th centuries. The Cathedral of Chartres is famous for its remarkable architectural structure and unique stained glass panels and windows. The Belle Verriere Window of the Cathedral of Chartres is one of the most interesting examples of the Cathedral’s stained glasses. The window consists of two parts which are dated from different centuries. The window can be observed at the south side of the Cathedral, and its composition is made from twenty-four specific segments. The upper part of the window was made during the 12 th century, and the researchers accentuate it could be located in the earlier Romanesque building destroyed by the fire when the other part of the composition was created after the Cathedral’s reconstruction in order to meet the requirements of the Gothic style. The research on the particular features of the Belle Verriere Window of the Cathedral of Chartres was traditionally conducted in relation to the problem of the glass or window reconstruction with references to the peculiarities of the Romanesque and Gothic styles. The most important investigations on the issue of the chronology and characteristic features of the glass design are developed by Frankl and Connick in the 20 th century. The most interesting works of the 21 st century are provided by Harris, Klein, and Horst Janson and Anthony Janson. Harris focuses on the Belle Verriere Window in the context of the history of the stained glass; Kleiner, Horst Janson and Anthony Janson present general discussions of the design of the Cathedral of Chartres and its windows from the perspective of the history of art and design. The specific features of the stained glasses in relation to the play of light and shadow with references to the Belle Verriere Window of the Cathedral of Chartres are discussed in the article “La Belle Verriere of Infinite Variety” written by Charles Connick and first published in 1932. The researcher pays attention to such characteristics of stained glasses as the possibility to change colors under the influence of sunlight. Thus, various lights affect the changes and vibrations in colors and tones, accentuating this or that part of the composition. The public’s perception of the central figure of the Virgin Mary can change according to different lights. In his work, Connick also emphasizes the importance of flanking buttresses for creating the complex picture. Connick’s article is important for discussing the art impact of the stained glasses containing the definite religious meaning with references to the Belle Verriere Window of the Cathedral of Chartres 1 . In his article ‘The Chronology of the Stained Glass in Chartres Cathedral” which was published in 1963, Paul Frankl focuses on the particular features of the glass and windows’ reconstruction provided in the Cathedral during several centuries. The reconstruction was organized in several stages, and it was caused by the fact of destroying the Romanesque cathedral in 1194. The researcher states that only four windows could be used in the further design of the cathedral which was worked out according to the principles of the Gothic style. The Belle Verriere Window was saved