First of all, I'm afraid to sell fake jewelry. This is a jewelry store relying on university resources. Secondly, authenticity can't be explained in a few words. You can ask them to give you a jewelry appraisal certificate, so as to ensure that you are not buying fake and shoddy goods.

As for the final price, it is really inconvenient to say, as the saying goes, "Gold and jade are priceless", and each piece of jade is unique. We can only say the price of a specific jade, and we can't generalize. And the practice of each business is not the same. The same is true of pearls. Of course, the rounder they are, the more expensive they are. The bigger they are, the more expensive they are. As for the price of platinum or platinum, you can check it online. Gold and platinum are quoted every day in the international market, and the selling price is similar to this. Now platinum is more than 400 yuan a gram, and gold is more than 280 yuan a gram. This is not on sale.

I suggest you go and have a look first, and then take some photos and hang them online if you can. After you look at the pictures, you can make a rough estimate of the price of the jewelry and jade you want to buy, and then consider whether to buy it or not.