Made with lead free hand blown crystal glass with thick steady base, safe to use and with a shiny look. Handmade Craft-Each beverage glass was made manually with 1600 degree forging, all we want is to provide the best beverage glass for you. -Beautiful Exterior-Clear shiny crystal glass, elegant color with special oval design, the most attractive beverage glass you have ever used. Rainbow Color-Innovative transparency rainbow color design, shows a perfect color of rainbow under the light