Costume jewellery necklace, help me find a chunky nice one for summer!

[HRHQueenMe]

I need a statement piece to go with a white plain summer blouse for evenings out, cheap and cheerful but pretty and expensive looking.
Help!

I just bought this and love it..

There's another active thread on here at the moment called 'what's the last bit of jewellery you bought' - check that out for more ideas..