The necklace is very unusual. It has been designed so one part can be worn at the front and the other part is worn down your back.
I was asked to make one for a graduation present. I am happy to make a bespoke Back2Front designs. They may incur an additional cost.
It is one continual fine chain approx a meter in length. At one end it has a mortar hat and the other end it has degree hanging on a chain.
The clever part is in the middle of the chain this is the clasp. It is made of silver with a rubber inside, the chain runs through the rubber. This clasp can then be moved backwards and forward along the chain so you can have the length you desire either at the front or the back.
The necklace is made of Sterling Silver, and rubber tube within the clasp.