In the next month my brother's marriage for this I am searching new design jewelry with precious stones.I visited most of the jewelry stores but not getting nice jewelry design.So, if some body having any information about nice jewelry stores please advice me.
I am sorry I do not know much about LA stores because I am on the East Coast but if you are open to the SF area, there's Joe Escobar which carries a good selection of coloured stone jewellery. It sounds like you are looking for a completed piece (stone already in a setting)?
So given the seemingly tight timeframe, you are interested in finished pieces only? Would you be interested in finding stones and then having them set?
If you are looking for contemporary designers, check out De Novo in Palo Alto (http://www.denovo.com/). They carry some of the most amazing designers, including Abrasha, Barbara Heinrich, Zobel and the Munsteiners. The prices can also be rather extraordinary, unfortunately.