Night is a sculpture in marble

Marble

Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite.Geologists use the term "marble" to refer to metamorphosed limestone; however stonemasons use the term more broadly to encompass unmetamorphosed limestone.Marble is commonly used for...

 (155x150 cm, maximum length 194 cm diagonally) by the Italian Renaissance

Italian Renaissance

The Italian Renaissance began the opening phase of the Renaissance, a period of great cultural change and achievement in Europe that spanned the period from the end of the 13th century to about 1600, marking the transition between Medieval and Early Modern Europe...

 sculptor Michelangelo Buonarroti, dating from 1526–1531, included in the decoration of the New Sacristy in San Lorenzo, Florence

Florence

Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

.

It is part of an allegory of the four parts of day, and is situated on the left of the sarcophagus of the tomb of Giuliano di Lorenzo de' Medici

Giuliano di Lorenzo de' Medici

Giuliano di Lorenzo de' Medici was an Italian nobleman, one of three sons of Lorenzo the Magnificent.-Biography:He was born in Florence, Italy. His brothers were Piero and Giovanni de' Medici....

, Duke of Nemours.