Mosiac, originally uploaded by theplug.

Mosaic Art Source mosaic definition:

mosaic glossary image - smalti smalti

smalto (pl. smalti) – smalti is characterized by its dazzling range of brilliant opaque colors. Smalti is prepared by adding crystalline material (corpo) and coloured material (anima) to the colourless or coloured fused glass. Smalti is literally available in thousands of colors, is a very stable glass, easy to cut and very durable. m.a.s. mosaic glossary

Mosaic Art Source mosaic definition:

gold leaf tesserae - mosaic gold gold leaf tesserae (mosaic gold)

gold leaf tesserae (mosaic gold) – 24k gold-leaf tesserae are made up of a glass support layer (usually transparent, at times opaque red or coloured) less than one centimetre thick. The 24k gold metal leaf is then sandwiched between the support and a thin protective glass layer (the cartellina). In tesserae the colour shade is determined by the purity of the metal, the thickness of the leaf, the colour, if any, of the cartellina and of the support. m.a.s.mosaic glossary

Mosaic Art Source mosaic definition:

tesserae – small, usually square pieces of glass or other material used to make a mosaic. Their size generally ranges from a few millimetres to two centimetres long and five to ten millimetres thick. The term derives from the Greek word meaning “four-sided”. m.a.s. mosaic glossary