Demonstration of "diagonal method" with vermeer's girl with a pearl earring. The superimposed yellow line shows the diagonal intersects her left eye and also the pearl earring. Object Type: painting. Genre: tronie. Date: circa 1665 Baroque (late 16th century–1750s). Dimensions: height: 44.5 cm (17.5 in) ; width: 39 cm (15.3 in). Medium: oil on canvas. Collection: Mauritshuis. Diagonal on Girl with Pearl Earring