The diamond necklace of Lao Fengxiang AU750, more than 3,000 bought, how much can be sold for resale?

Diamonds are colorful
I certificates are only responsible for the sample. The product coding is that the internal logo cannot find normal
The general precious metal jewelry labeling material, gold content, template number, ring with diameter n The saying of Wanjinjin generally use AU999 or 24K to identify
Is to ask for invoices to see the invoice name
October 24, 2014, the transaction price is about 242 yuan, gold jewelry is about 280 yuan, and invested 248 yuan in gold , Recycling 232 yuan, the recycling price of pawn bank is only less than 205 yuan. Investment must be cautious if you need to query detailed brand prices to verify and verify; n despicable advertisements, contempt for some helping the administrator

I can't sell much, at most half price.