Single serving appetizer glasses in extra clear crystal glass, is ideal for serving appetizers or desserts at walking dinners, cocktail parties or stand-up buffets. Michelangelo is manufactured in ultra-clear Sparkx crystal glass. The ISO certified Sparkx glass by Luigi Bormioli does not contain any lead or other heavy metals and has an exceptionally good transparency and colorimetric purity. It is extremely durable and resistant to industrial washing cycles. Sparkx crystal glass Dishwasher safe Does nto contain any lead or other heavy metals in the glass Extremely durable and resistant to industrial washing cycles