This is the dice from the (amazing) novel "The Starless Sea" by Erin Morgenstern.
"Six dice of the classic six-sided variety, carved from dark stone. Each side has a symbol rather than numbers or dots, engraved and accented with gold. He turns one over so he can identify all of the symbols. The bee and the key and the sword are familiar but there are more. A crown. A heart. A feather."