The chandeliers, crafted of Bohemian crystal at the end of the 18th century, are located in the grand hall Sala Napoleonica (Sala Bonaparte), and in the smaller Sala Gian Galeazzo, having the same design in smaller scale. The original crystal components of the chandeliers were dismantled and shipped to Lasvit glassworks in the Czech Republic. Back to the region of Bohemia, an area with rich glassmaking tradition, passed down from generation to generation.
The restoration project by Lasvit required a combination of three glassmaking techniques. These included the production and replacement of hand-cut crystal trimmings, hand-blown and cut components, as well as mold–melted and cut glass arms. The overall aim was to sustain as many original components as possible, despite such traces of age as scratches or minor damage to preserve the original character of the chandeliers.