My investing idea today is a jewelry company, which isn’t the sector that usually springs to mind when growth investing is mentioned. But Fuqi International (pronounced Foo-chee) is a Chinese jewelry manufacturer that’s catering to an enormous appetite for gold among China’s increasingly affluent people. In many countries, China and India among them, gold jewelry isn’t just an adornment, it’s a way to accumulate wealth and pass it along to future generations. Long experience has taught many people that necklaces around your neck and bracelets on your wrists are more portable and more reliable than volatile currencies and fragile...