Zi Collection, Middle Volume, Page 33, Entry 06
Radical: Jade (yù)
Pronounced shū (entering tone)
Also recorded as shū yì (entering tone)
In the "Jade Compendium" (Yupian), it is recorded as pronounced shū yì (entering tone), with the same sound as sè. It is a type of jade artifact.
It is also recorded as pronounced jù yòu (entering tone), with the same sound as jiù. The meaning is the same.