Where can I buy some nice costume Jewellery?

[WannabeNigella]

I normally wear my normal gold Jewellery but want to dress up a wedding outfit with some colourful stuff but have no idea where to look? I don't want anything tacky but don't want to pay a fortune either. If I could get a necklace and bracelet for around £50 that would be great.

Thanks

[fatandknackered]

Monsoon - they have some lovely stuff - also Accessorize which is a bit cheaper. And John Lewis too (which I was kind of surprised at).