Each DUO vase is a unrepeatable piece, chosen from a small pre-produced stock in a marble quarry.‎ Since each marble block is unique, each piece appearance may vary from hundreds of possible natural designs and colours.‎With an unusual silhouette, the DUO vase highlights the vertical and tricks the human eye.‎ The bi-materiality is aesthetically appealing, but also has functional reasons: mouth-blown glass cylinders can accommodate tall twigs and leaves, while heavy bases made of Portuguese marble like Pele de Tigre and Serpa assure astounding stability.‎ The DUO vase is available in two sizes.‎