Alessi - Italian espresso maker Ossidiana - Metal - Cast aluminium - Designer Mario Trimarchi; Alessi Italian espresso maker Metal Metal. Dimensions:Ø 8,5 cm x H 17,5 cm. Ossidiana embraces the memory of the traditional moka coffee maker and those of obsidian, the volcanic stone. Designed by the Italian product designer Mario Trimarchi, Ossidiana is a premium grade stovetop espresso coffeemaker with a distinguished Italian style and hand crafted to the highest possible standards in the industry. Alessi's legacy of quality and reliability lives on in this coffee maker crafted in high-quality 18/10 stainless steel. Simple, stylish and functional. Made by Alessi in Italy.