Designs such as this one are created by painting and layering different colored glass powders and enamels onto glass panels. The layered glass is melted in a kiln and usually requires multiple firings at different temperatures.  Color intensity changes as the sunlight filters through it. 
 

Red Ginger in Lava Bed

SKU: 18-08-314
$68.00Price
    • Glass Panel Size: 7 x 4 in
    • Mounting Sold Separately (see options below)