Tourmaline in Hainan is generally low in cost performance. My friend bought a bracelet in Hainan and spent 3700 yuan. The result was really seen by someone, but it was only worth 700 yuan, which was a big gap. You can compare it with the tourmaline in Mei Wei Jewelry Mall. Buying it here now feels cost-effective and much cheaper than buying it in the mall before. Tourmaline in Hainan is famous for its pits. Try not to buy it.