This is a handmade single-flower vase made of crystal glass by The Glase Studio in Otaru. The opening has a unique shape. The decoration on the bottom is also fantastic, with a complex mix of bubbles and colored glass. The Glase Studio in Otaru is a handmade glass studio located on a hill in Otaru. They also offer hands-on workshops. For more information, please see Wikipedia. The size is approximately 18 cm in height and 6 cm in maximum diameter. It is basically unused, but please understand that it is an antique item due to its age. Thank you.