Diadema is based in the Tuscan hills outside Florence, centered on the historic Villa l’Olmo estate held by the Giannotti family since the late 18th century. The modern winery took shape in 2004 under Alberto Giannotti. Production focuses on Tuscan varieties and IGT blends, with vineyards in Impruneta and expansion into the Mugello zone through the Collefertile farm project. The wines reflect the region’s ripe, structured profile while maintaining polish and consistency across cuvées like Diadema Rosso and the more approachable Damare line. Today the second generation, Giulia and Livia, have joined the estate.