It is from the 10th century A.D. The foot is a later addition. The gold mount is also a later addition in Paris
Its Diametrer is:
H. 24.60 cm; Diam. 16.50 cm
It was in Cardinal Mazarin‘s collection and was transferred to the Palais de Saint-Cloud in the 19th century
It’s located in the decorative arts section of the museum.
This 10th- or 11th-century Byzantine sardonyx vase, one of the finest pieces in the collection of Cardinal Mazarin (1602-1661), passed into the collection of Louis XIV (1638-1715) in 1685. The richly enamelled mounting was added in the late 16th century in Paris. The decor of the vase and the mounting are reminiscent of the work of Richard Toutain the younger.
A Byzantine vase
The vase itself, made of sardonyx, is bucket-shaped. It was made in a Byzantine workshop in the 10th or 11th centuries. Its large size invites comparison with the large chalices in the Treasure of Saint Mark in Venice. The walls are very thick and the base is concave. There are a few imperfections in how the stone has been worked. The lower part is circular and slightly uneven. The body of the vase gradually flattens out so that the upper rim is almost oval in shape. This shape is similar to that of a chalice in the Treasure of Saint Mark, although that model is smaller and has a gilded and enamelled silver mounting.
Enamel and precious stones
The mounting consists of three very different elements. The upper edge is decorated with Moorish motifs - white intertwining fleurons and golden volutes on a black ground. This edge was set with nine single stones alternating with nine small roses formed of a central stone ringed by smaller stones, all since lost. The openwork mounting underneath the vase is decorated with four gold tritons alternating with four female faces, also in gold, separated by groups of brightly colored fruit. The baluster is decorated with arabesques on a dull gold ground. It is very different in style and may have been designed for a different object altogether. This mounting is very similar to one made in 1570 by Richard Toutain the younger for the onyx ewer now in Vienna. The mounting for the vase in the Louvre was probably made by the same man at around the same time.
Bibliography
Alcouffe D., Les Gemmes de la Couronne, Paris, Editions de la Réunion des musées nationaux, 2001, p.80-83.
Source: https://www.louvre.fr/en/oeuvre-notices/sardonyx-vase