It's from a company called Sawyer & Scout that sells jewellery and accessories. They also do collections based on Harry Potter, The Hunger Games and the Divergent series. This particular necklace however contains a small cluster of all things Harry Potter; lightning bolt, wand, golden snitch, Gryffindor charm and a Philosopher Stone. All coming together on a bronze coloured chain.
I've already got my eye on a Hunger Games themed necklace already. Oh stop me before I put everything in my basket!!!!