For a long time, it was thought impossible to isolate a pearl's genetic material. Now, a Swiss research team has achieved this elusive goal. Scientists Joana Meyer, from the ETH Institute of ...

Nov. 28 -- Diamonds may be a girl's best friend, but thousands of women still lust for the timeless elegance and glamour of pearls. But can you tell a top-of-the-line strand from a second-rate — or a ...