Which of these sell the best quality jewelry? And which are the best value for money?

Topshop
Bebe
Forever 21 (particularly the rings and earrings)
Juicy Couture
Bonita
Diva (the Australian brand)

Or if you have any other brands in mind that sell nice costume jewelry (apart from Charlotte Russe, they don't have it here) do say so =)

Answer:
IF WANT GOOD JEWLS THEN U MAY GET IN DUBAI NATIONAL
GOLD CARNIVAL