Bullseye French Vanilla and taupe glass sprinkled with turquoise and fired. Turquoise reacts with both types of glass forming white line. Great article about how to intentionally use this glass reaction!
These lacy bowls start life as hundreds of tiny grains of glass which I spread on the glass kiln shelf and then heat them to a temperature of around 800 degrees. The tiny pieces of glass 'frit' then melt together randomly to form a delicate lace-like .