Nearly every year, some fresh locality on the plains or in the valleys is worked with profitable results by the gem seekers, but the rocky regions of the mountains, whence these precious stones have been washed in the process of disintegration which has been going on for ages, have never been prospected. The vast richness which is hidden in those primitive rocks will one day, perhaps, be brought to light, rivaling the dazzling stories of the Arabian Nights, or the fascinating extravagances of Jules Verne.
The choicest uncut stones which are still to be seen in the walls of the Taj Mahal--that poem in marble at Agra, India, the tomb of the wife of Emperor Shah Jehan--are said to have come originally from Ratnapura. They were only crudely dressed by native skill for this purpose, but the intrinsic value is there all the same.
Besides precious stones, Ceylon produces gold, quicksilver, plumbago of the finest quality, and magnetic iron ore. Plumbago has at various times formed quite an item in the exports of the island. The supply of this article in the neighborhood of Ratnapura is practically inexhaustible. It is found in large, detached masses of fine quality, five or six feet below the surface of the ground. There is always a sure market for plumbago, and it seems singular that a more organized effort is not made to obtain it for export. The Colonial Blue Book shows that in 1840 there were only about one thousand hundredweight packages of plumbago or graphite exported from Ceylon. Each year since has seen a large increase of these figures, until in 1891 there were over four hundred thousand hundredweight packages sent from the island, or say two hundred thousand tons. This aggregate, we are told, will soon be largely increased by adopting American and European machinery in mining the crude article. Some of these mines have reached a depth of six and seven hundred feet. Plumbago mining may not present the charm which attaches to the digging for rubies and sapphires, but in the long run the cash results are far more satisfactory. Even iron would pay better than gems, and it exists here in inexhaustible quantities, particularly in the western and central provinces, cropping out at the surface in great purity. The natives have for centuries been in the habit of smelting this ore, and of making it into such tools as they required. They are excellent imitators in metal as well as in wood. In the Colombo Museum there is a sample of the gun-barrels (really effective arms) which the natives were accustomed to make, with such primitive tools as they possessed, out of this home-smelted magnetic ore. The iron implements, which are successfully wrought into various forms by the rude process of the natives, are equal in temper to the very best Swedish work, showing that the raw metal must be of a superior sort.