Volterra Nero Oval Platter with Dipping Bowl Set The Volterra Nero Collection is made from handmade glass infused with a rich black swirl and enhanced with a signature pewter trim. The dipping bowl with tray is perfect for serving dips and sauces or used as a salt and pepper cellars. Italian Pewter and Glass. Hand made in Italy. Dimensions: Bowls - 2.75" D x 2.25" H; Tray - 8.25" L x 4.5" W Hand wash only.