20 inch length and 4 mm wide. 100% Real Genuine Sterling Silver 925 stamped, Italy stamped , SU stamped , all on the clasp.The item is used and without any damages or repairs. No bends , No breaks, No kinks, No twists, No scratches, No tarnish, No marks. I purchased this item thinking it was very wide because the description and photos made it out to be a whole lot wider than what it is. I do not wear small necklaces of this nature or size. All I want is the money I have in it back . I''m not making any profit. Thank you for looking.