About this work
This small tazza is executed in a glass known as girasole. The opalescence of the glass is due to the presence of lead hydrogen arsenate crystals in the metal. Girasole is the Italian word for ‘sunflower’ but also refers to a type of opal gemstone whose iridescence this glass recalls. Girasole glass was particularly popular at the end of the seventeenth century and during the first two decades of the twentieth century.