Unlucky in Devon - 13

Knife - By Davi Segre (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (www.creativecommons.org/licenses/by-sa/3.0/) or CC-BY-SA-2.5-2.0-1.0 (www.creativecommons.org/licenses/by-sa/2.5-2.0-1.0)], via Wikimedia Commons

It is unlucky -

"To give a friend a knife ; as it cuts all love away."

Hewett 1900