Gunmetal and Powder Blue Chain Necklace

Cool, heavy/solid gunmetal 3-chain collar necklace w/powder blue/blue-gray narrow roping intwined. Some minor, unnoticeable signs of use. I did my very best to get them to show in the last two pictures. You really have to look for it to see it. This was gifted and I don't know the brand. The necklace is about 3.5 cm wide. Length is adjustable. Please see photos.