Tongling jewelry is a comprehensive brand, but it is still dominated by diamonds. Similar to other brands, jade is not the main business. Jade in jewelry stores is the cost price multiplied by the price, so the prices of different brands will be different. Just compare a few more.
Cooperative brand, which country really doesn't know! Anyway, it's hard to meet someone who knows and is willing to give you an answer.
Berlin film festival designated jewelry brand. And diamonds depend on 4C standard, weight, color, clarity and cutting. Among them, cutting is directly affected by human factors. New york, Mumbai, Tel Aviv and Antwerp are famous cutting centers for cutting high-quality diamonds.
Recently, I also bought a jade pendant handed down from Tongling, and the original stone mining area of jade is strengthening mining control, so there is a lot of room for jade appreciation.