Dictionary / Vocabulary / 玉石混交
ぎょくせきこんこう
mixed bag; mixture of good and bad; jumble of wheat and chaff; mixture of precious gems and common rocks
Also written 玉石混淆
ボスには玉石混交のグループとは言われたけれど、俺は玉かな、それとも石なのかな。
The boss said this group is a real mixed bag. I wonder if he places me with the wheat or the chaff.