5.5 cm (2.2 inches). Johansfors glasbruk was a swedish glass maker founded in 1891. The current factory with glassblowing and glass furnaces was built in 1955 at the same place where it began in 1891. It was bought by magnor glassverk in 1997 after having had financial problems. The factory is now closed.Examples of the glass produced there can be seen at the nearby johansfors gallery (in bruksgatan, johansfors). This beautiful set is in excellent vintage condition. May have minimal wear due to age. Also, please see photos for the condition. They are also part of the description. We always do our best for all of our items to describe things accurately, but sometimes there may be issues we are not aware of or the things that we miss because we are not the experts for all of the antiques and vintages, but you are always welcome to message us with any questions or concerns. We can also have a discussion on the things you find interesting in our etsy shop. We package all our orders with love and care. Please take a few moments and wander around my shop. All of the items in our shop are from our vintage and antique collections and we add new items every day. If you have any questions or concerns, feel free to contact me. This item is made of glass.