The dominating character in the lofty glass composition that the skylight is, is the power of light. It is the light, in fact, that gives life to the forms and figures present in the skylight.
The central theme is that of the family, represented through the diverse symbolisms all traceable back to the three elements: air, earth, and water. In fact, the family is traditionally represented by the number three (the father, the mother, and the son), the perfect number both in the Western and Eastern culture.In the four angles of the skylight, it is possible to see four families of egrets (birds symbolically representative of the sun) in four different moments of the day. At the centre of the skylight there are four families of dolphins (animals symbolically representative of the moon). Just as the egrets, even the family of the dolphins are represented in four different periods of the months relative to the lunar phases. In this way the flow of time is represented in all of its forms: daily and monthly, and, together with the frescos, seasonally.
The glass obtained through the ancient technique of the mouth blowing is a mix of oxides powder and nobel metals. After being made viscous at high temperature it is put on the edge of a tube that the artisan blows into. The mass turns into an oblungo ball that is then cut at the edges to obtain a cylinder. It is thus cut longways and heated again to flatten it.
The structure was built in the art studio at the same time as the windows. Therefore the work is a unique piece entirely signed by the artist.
Together with the structure the wrought iron elements were built by hand according to the ancient technique and then gilded. The wrought iron elements are the centre of the ceiling which exalts beauty and importance all around.