Gold jewel set with two onyx cameo busts of Louis XIII (1601-1643) and Anne of Austria (1601-1666) facing towards each other within a frame of acanthus leaves, interspersed with table-cut diamonds and surmounted by a Royal crown, similarly-set. French, 2nd half of the 17th century.
Micromosaic and Gold Parure by François-Regnault Nitot: Napoleon I gave Empress Marie-Louise the parure as a wedding gift in 1810.The micromosaic was probably made by Roman micromosaic craftsman made a speciarity from 18th century. Their themes were usually animals, flowers, reproductions of ancient monuments and landscapes with ancient ruins. These micromosaics were fitted in gold vine leaves and grapes. Such naturalistic metal fittings anticipate a vogue in romanticism era.