The Prometeo collection by Bormioli Rocco is a true modern classic that will suit all dining occasions. The simple, elegant design allows the high quality opal glass and exquisite craftsmanship to shine. See below for more info. Prometeo is part of the opal glass collection by Bormioli Rocco. The chemical components used to produce opal glass give it a distinctive, unmatched white colour. Additionally opal glass is five to six times more resistant than normal glass and it withstands constant use so it will last longer and it is non-porous, cleaner, more hygienic glass. Bormioli Rocco glassware continues to inspire worldwide. With constant refinements to traditional glass-making techniques, Bormioli Rocco glassware exhibit quality, style and all-around practicality. Today, Bormioli Rocco is much more than one of the world's premier makers of wine glasses, champagne flutes, beer glasses, carafes and decanters. Their extensive range extends to include food storage, jars, dessert dishes and other homeware. Bormioli Rocco: synonymous with Italian quality since 1825.