Zanzan
(1) (pictophonetic characters. From jade, awesome. Original meaning: jade with impure texture)
(2) with the original meaning 【 impure jade 】
Zan, three jade, two stone also. -"Shuo Wen". Xu Kaichuan: "It is said that two of the five pieces of jade are stones."
(3) Jade spoon used for ancient sacrifices [Jade of herself]
Gui Zan's wine vessel is very delicate, and the ladle's wine vessel is full of wine. -"Poetry, Elegance and Dry Foothills"
(4) Names of people
Shang Shu Yang Zan Zi Tongzhi Bamboo Slips
The implication is that jade is of poor quality. But someone is still using it.