xi3
ruler's seal

strokes 10
radical
strokes after radical 5
碧玺 碧璽 bi4 xi3
tourmaline

国玺 國璽 guo2 xi3
seal of state

红璧玺 紅璧璽 hong2 bi4 xi3
topaz

玺印 璽印 xi3 yin4
seal (esp. of ruler)

印玺 印璽 yin4 xi3
official seal; imperial or royal seal; papal bull

掌玺大臣 掌璽大臣 zhang3 xi3 da4 chen2
chancellor (rank in various European states); grand chancellor

掌玺官 掌璽官 zhang3 xi3 guan1
chancellor (rank in various European states)