B.C. Jade
In my part of the world, Jade is quite a common stone, but also with some commercial value. Boulders of it are exported to China, and such things as small carvings, chess sets, various jewelry, and statuettes are widely available here. Tourists seem especially fond of it.
I admit to an affection for the deeper green variety, and have a few pieces of jewelry and a "worry stone" that I always find very calming. Many people I know consider it a "good luck" stone. In any case, the demand for it is large and steady.