Okay, it's not DNA, but this necklace is reminiscent of the double helix design of your very own original DNA.  It's fashioned of smokey-grey glass crystals on 18-inch long helix-shaped wires and has a lobster-claw closure with about an inch play to adjust for your perfect fit.  It's neutral—wear it with anything, but it'll dress up a sweater or a scoop-neck and flaunt your personality in style.