Nothing leaves a mark like a string of octagons! These trapezoidal bad boys will rub your chest so raw, you’ll need 8 tubes of Neosporin. This necklace might look simple and chic, but don’t let the design fool you. This chunky jewelry can really scratch up your chest and leaver you red-necked for weeks! People won’t be able to take their eyes off of you-in a bad way!