1N-UNCOUNT 金粉;金末;砂金Gold dust is gold in the form of a fine powder. 金粉;金末;砂金
2N-UNCOUNT 稀罕之物;难得之物 If you say that a type of thing is like gold dust or is gold dust, you mean that it is very difficult to obtain, usually because everyone wants it. 稀罕之物;难得之物 [British]