古墳時代
became very common in the Kofun period (250-538 CE), and by the end of the period almost all kofun tumuli contained . In the early Kofun period, were made from jadeite as in earlier periods, but by the middle of the period were made from jasper, and by the end of the period, almost exclusively of agate and jade. capped by silver or gold also appear towards the end of the period. Large made of talc, imitations of smaller ones made of more precious materials, were used as grave goods. are found in kofun tumuli across Japan from the period. Their use went from merely decorative to sacred and ceremonial grave goods. are with inscriptions that look like flowers of the clove tree and have a hole suitable to attach to a string. These first appear in the Kofun period. Also in the Kofun period, appear on necklaces, with several set between bored cylinders. Archeological remains show evidence of similar ankle bracelets, but they are less common. Clay haniwa funerary objects of the Kofun period commonly depict people wearing the necklaces and ankle bracelets.