CERAMIC JAPAN - Duck Cup & Saucer / アヒルシリーズ LCT-F1 All Kagami Crystal materials are

All Kagami Crystal materials are a type of glass called "Crystal Glass"

The left-hand side of the pic: "Nejiri-Ume(ねじり梅)" Series / Plum

And in there

These cups can be very useful as sake cups or tea cups

CERAMIC JAPAN - Duck Cup & Saucer / アヒルシリーズ LCT-F1 All Kagami Crystal materials areThis delightful tableware collection showcases a cute duck motif. The handles are crafted with a ceramic like thickness, yet they boast a notably soft and gentle form that makes them easy to hold. These pieces' functional yet charmingly deformed shapes make them a perennial in Ceramic Japan's collection. About Ceramic Japan: Drawing on the techniques that thrive in Seto City, Aichi Prefecture known as the town of ceramics Ceramic Japan always has