“信物”造句

请收下这枚戒指作为信物.
Please have this ring for a keepsake.

他毫不费力地挪动岩石, 取出信物.
He had no difficulty in moving the rock, and recovered the tokens.

一定要钻石对戒作为结婚信物吗 ?
Must we choose diamond ring as token of marriage?