Micromosaic

The micromosaic is integral part of Rome culture. Romans used to decorate walls and floors of their villas, tops of table and other with the micromosaic. This tradiction was handed down the following centuries until XVIII, period in which increased the exigency to preserve the pictorial works reproducing it in micromosaic otherwise they shall be destroyed by moisture. It' s just in the half of XVIII century that the Vatican Study of Mosaic, even called Saint Peter' s Reverend Mill created this new kind of mosaic, made by the same techniques of classical roman mosaic but with tesseras in spuned oxides of enamel, much smaller and thiner than the old tesseras in stone or marble. To have an idea of the difference in size between these two kind of making the mosaic It's enough thinking about the dimensions of classic mosaic (about 1 cm of side in section) compared to the micromosaic, which has a section even of 0,1 mm.

History of micromosaic in jewelry
Wearing micromosaic jewelry became popular during the Grand Tour period (17th - 19th Century). Members of rich European families would travel around Europe, taking in the sights and cultures of different countries. Italy was a very popular tourist spot as it had a long and prestigious history in arts and culture - a favourite subject in aristocratic circles. It was also a famous glass producer, and canny Italian craftsmen quickly turned their glass making skills to making stunning miniature micromosaic pictures for their rich visitors.
Mosaic work jewellery of this period usually depicted famous Italian landmarks such as the Collusium and Vatican Square, though occasionally Roman mythology was a subject too. The richest tourists would commission their own mosaics, with animals and famous works of art being favourite subjects. The small size of the micromosaic was appealing; micro mosaics could be worn on the Grand Tourists continuing journey, or sent back home to loved ones as a kind of fore-runner to our modern postcards.