Depending on where you bought it, there are hundreds to more than a thousand shopping malls, or even more expensive. It's definitely not worth it. It depends on the old and new models. How much gold was used? Process complexity, brand value and other factors.

If you are in Beijing, go to the jewelry hall on the third floor of Xidan 109 building or the jewelry store near Xisi Address Museum. Many 18K necklaces sold by G. Weigh are in front of you. Now the price is about 220-250/g, depending on the degree of technology.

This thing really doesn't need to buy any big brands. Big brands will only give you more money, nothing else.

You can also buy it from Taobao. It's not worth much, and the chain head will be engraved with 750... 18K. It is no problem to buy from a seller with consumer protection certification or a store with a real description. Don't worry.

Besides, you said Zijin? It's gold, isn't it? Also called tricolor gold. Usually the price is the same as 18K gold and 18K platinum. It is purely personal preference, that is, 25% of other metals use different colors.

If you prepare a necklace with a pendant, it is recommended not to buy a bone chain, which is bright, but it is too easy to fold. Especially ugly, hard marks are easy to break.

A belt doesn't match Zhui Er's snake bone or a tile. The latter is not easy to fold, especially bright (different places have different names, I can't say)

Fine melon seed chain and ingot chain are also good, strong and relatively difficult to break. Zhui Er is beautiful and bright, and there are new buttons, big buttons and small buttons.

He Zi chain and prism chain are also good choices, which will not be out of date and will be well matched.

The chain of days is too thin, and I don't like it very much.