In Sri Lanka, the most famous gem city is Ratnapura, about 79 kilometers southeast of Colombo. Ratna means gem, and pura means city. This is a mysterious place full of legends. It is said that the Gem Valley discovered by Sinbad on the night of 100 1 year is here. The street 6 meters wide 100 meters long in the town has gathered the eyes of the whole world-the famous gem trading market, where miners come with gems to sell to businessmen. The 466-carat sapphire "Oriental Giant Blue", 500-carat "Opal of Hope" and even the 104-carat "Stuart" sapphire in the British crown came from here.

As soon as tourists get off the bus, they will be surrounded by people holding a little bit of one or two carats of precious stones. No matter how you dodge, there are always Langkawi people coming towards you with gems and wearing a condenser to identify the authenticity. Noble gems are bargained for in the sea of people like this vegetable market.