Thai gold prices fell 350 baht on 17 Sep 2026 versus the prior close. Jewellery gold sells at 68,850 baht per baht-weight and buys back at 66,491.76; bars sell at 68,050 and buy at 67,850. The spread between buy and sell on jewellery is about 2,358 baht, so buying and selling back quickly costs a lot. The US Fed raised rates 0.25% to 3.75%–4.00%, and the Fed chair signalled higher-for-longer rates, which means costlier home, car and credit-card loans. If you hold gold stock or price gold jewellery, reprice in line with the morning moves and check the spread before you trade.