His earliest training was in his native town of Belluno with Antonio Lazzarini. He then moved to Venice, to the studio of Gregorio Lazzarini and later that of Sebastiano Ricci. His career largely overlapped with Lazzarini and Ricci's fellow pupil, Giambattista Tiepolo, who was seven years his elder.
Between 1710-1720, he painted a group of eight pictures that included the Mary Magdalene for the church of Santo Stefano in Belluno, and Entry into Jerusalem for San Teodoro in Venice. He also painted three frescoes on the Life of Saint Helena in the Scuola del Vin next to the church of San Silvestro. Diziani’s celerity and technical assurance are evident from preparatory oil sketches, where color has been applied in rapid and spirited strokes.
He also worked as a scenery painter for the theater and opera in Venice, Munich (1717), and later in Dresden, in conjunction with Alessandro Mauro. Diziani was invited to Rome by Cardinal Ottoboni in 1726, to paint a "magnificent decoration for the church of San Lorenzo in Damaso". This work is now known only through an engraving by Claude Vasconi.
- Diziani Gaspare, Orazione nell'orto del Getsemani.jpg
- Gaspare Diziani - Adoration of the Magi - WGA6355.jpg
Adoration of the Magi
- Gaspare Diziani - Adoration of the Shepherds - WGA6357.jpg
Adoration of the Shepherds
- Gaspare Diziani.jpg
Adoration of Magi (Rijksmuseum Amsterdam)
- Gaspare Diziani - Finding of Moses - WGA06359.jpg
- Gaspare Diziani Trzej aniolowie u Abrahama.jpg
Abraham & Angels
- Gaspare Diziani-Satyr.JPG
"Satyr & Peasant"
Both Tiepolo and Diziani were prolific, although Diziani's commissions, especially the early ones, were more playful bedroom, small salon, and perishable scenographic decorations, works for private ornament while the more eminent Tiepolo was able to attract the more vast ceiling decorations encompassing devotional, mythologic, and allegorical topics beyond and above the quotidian. Diziani does show the influence of Tiepolo, although not the lightness of coloration that the latter had gained from the frescoes of Luca Giordano.
- Artnet biography from Grove encyclopedia
- Bryan, Michael (1886). Robert Edmund Graves, ed. <span />Dictionary of Painters and Engravers, Biographical and Critical (Volume I: A-K). York St. #4, Covent Garden, London; Original from Fogg Library, Digitized May 18, 2007: George Bell and Sons. pp. page 415.
- Lanzi, Luigi. The History of Painting in Italy from the Period of the Revival of the Fine Arts (1853)H.G. Bohn; page 305
- Italian Paintings, Venetian School, a collection catalog containing information about Diziani and his works (see index; plate 24).
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