A micromosaic and gold bracelet early 19th century

Very delicate bracelet in micromosaic on a vitrified support in aventurine glass made of twelve elements linked together by a gold chain, made by the master goldsmith François Dafrique.
The medallions represent mainly lake landscapes bordered by ruins.
For the main part we note:
-The waterfall of Marmore
-The pyramid of Cestia
-The ruins in Via Appia
-The bridge of Lucano
-The tomb of Cecilia Metella
These views and monuments are reconstituted by means of "tesserae" of a very rare finesse.

Chipping on the support of the central medallion almost invisible (upside down).
Number of medallions: 12
Dimensions of the central medallion: 2,1 cm/1,7 cm
Dimensions of the extreme medallion: 1.5 cm / 1.1 cm
Gold: 18 carat
Master goldsmith:FD for François Dafrique