Cord: adjustable length light khaki
Length of glass portion: 45mm

Please note the cord can easily be moved around the piece to wear it up, down, or sideways.

Third photo is not of this exact piece, but a similar piece being modelled. 

These slices of bottle neck are cut, ground, sandblasted and tumble polished into a shimmery gloss, or left more matt to show their form. Every one is handmade in Brendon Jaine's backyard workshop, in Invercargill, New Zealand.

They all come with an adjustable length waxed nylon cord, and one of Brendon's handmade copper and brass catches.