Dhanaja gemological museum in Ratnapura is one of the largest, reputed and well established business institutions dealing with the sale of gems and jewelry items.Huge collection of ancient coins of Sri Lanka started from the 1st century, as well as an Ola Books collection and many kinds of Antiques, You can see here.All the gem stones and other mineral specimens are also found in Sri Lanka and are available at very reasonable prices.It is licensed by Ceylon Gem Cooperation and it is a Ceylon Tourist Board approved gem museum.
photo source:http://www.dhanajagems.com/