Kiriko - Old Fashioned Tumbler
Kiriko is traditional Japanese glass cutting, which was originally learned from the Dutch in the early 1600's, and later popularized in Edo (early Tokyo). Today, there are still some masters practicing. I got together with one such Master - Kobayashi Yoshiro (http://www.japanstore.jp/find/brands/edo-kiriko-kobayashi/), and he produced a design I made for an old fashioned tumbler.