These bottles are made of uranium transparent glass and are all blown by mouth and were used in French wineyards to protect young grapes from weather and instect attacks. Each bottle is different. This set includes 1 smaller bottle and 7 slightly bigger ones. They can be used as vases or for decoration purposes. Under a proper UV light, they will shine a discreet green hue. Pictures taken with a 365 nm UV light. Quick delivery. Comprehensive packaging. Please check my other items to save on shipping costs.