The Preciosa Cornelian star is a new type of cornelain which includes an intermediate layer in the shape of a six-pointed star. The points of the white core filter through the colored transparent lining and its shadows give the impression of fine stripes. Lining of transparent glass is available in the colors yellow, orange, red, purple, blue turquoise, green and black. The Preciosa Cornelian star can be manufactured in the size range from 5/o to 34. An interesting shadowing effect is created on the surface of the larger sizes.