Only one, right? It doesn't cost much, depending on the brand. Like ordinary necklaces, you can buy pure silver for less than 100 yuan, but like Tiffany's rings and pure silver, one is more than 2,000 yuan, so you can buy one in ordinary jewelry stores for almost 100 yuan. It won't cost much. The sterling silver necklace I'm wearing now is 30 yuan, but now the price of silver has gone up, which may be expensive.