Gemstones in Bangkok

It's better to leave them well alone. The tricks of many dubious Thais are so ingenious that you might end up in a "Jewelry Store" more quickly that you think. You will be told the greatest stories about the great deals you could make if you resell the gemstones when you return home. In the end you'll end up paying for it. It's better to buy gemstones only if you are an absolute expert.