Bi Disc China 3rd - 1st centuries B.C. Catalogue Entry Cast from translucent turquoise glass, both ends are decorated with grain patterns. Both edges of the circle have approximately 1 mm thick inclines, indicating that the manually applied adjustments made to the casting process remain today. About An Introduction Collection Architecture Photo Gallery Membership Visit Visitor Information Suggestions for First-Time Visitors Frequently Asked Questions Museum Map Barrier-Free Access Information Inquiries Audio Guides Flowers in Season / Cherry Blossom Report Exhibitions Current Exhibitions Upcoming Exhibitions Past Exhibitions Events Event Calendar Events Programs for Children and Families Programs for Adults Dining & Shopping Miho Museums Original Products Restaurant Tea Room Museum Shops “Delicious Is Beautiful” Maps and Directions Public Transportation By Car News Press Site Usage Agreement