The leather collar

Whilst reading through the huge Elle september issue, in the ELLE edits feature I saw a gorgeous accessory that one never really thinks of when buying accessories: a detachable leather collar by Alberta Ferretti. Now, being a student I certainly cannot afford to buy such a piece from a Ferretti collection but I would love to find some on the high street. I like simple clothing so adding a collar to change my staple wardrobe would be lush.

Anyone know where I could get one on the highstreet??