Finished jade products and raw stones were widely distributed during the Jomon, Yayoi (10th century B.C. to 3rd century A.D.) and Kofun (3rd to 6th century) periods.

Would it sound strange to say I was enlightened when I went recently to Ueno to meet "haniwa"? Haniwa are terracotta clay figures that were made during the Kofun Period (3rd to 7th centuries ...