This stamp was issued on September 13, 2006 to promote the World Exhibition of Postage Stamps PRAGA 2008 which held in September 2008 at the Exhibition Grounds in Prague - Holešovice.
The Florentine mosaic featured on the postage stamp is the property of the Museum of Applied Arts in Prague.The Florentine mosaic is composed of precisely cut gems so that no or almost no gaps can be seen between the gems. The colour and drawing of the stone is used to achieve the artistic effect. This technique was invented in Florence and was always considered as an exclusively Italian matter. In the 17th and 18th centuries it was much popular as a decoration of cabinets, boxes and furniture in general. The great collector and patron of arts Rudolf II invited to Prague the mosaic makers and gem cutters Cosim and Giovanni Castrucci who founded a prosperous workshop in Prague. Their work represents an interesting, independent version of the Florentine mosaic.