Italy Handmade Micro Mosaic Floral Arranged Tesserae Beaded Gold Toned pin GS654

This is a vintage Italian micro mosaic brooch with a floral design.
Micro mosaics are created from tiny pieces of glass or enamel, called tesserae, that are arranged to form an image. 
The art form originated in Italy in the late 18th century, with artisans creating miniature versions of larger mosaics for private customers. 
Vintage Italian micro-mosaic jewelry, generally from the 1920s to the 1970s, often features larger tesserae and bolder colors than earlier, more intricate pieces. 
The brooch in the image has a black background with a floral arrangement of red, yellow, white, and blue flowers. The pin is in good condition
Size 1 1/4" x 7/8".