The equation E=mc 2 is one - a cultural icon as much as it is a statement ... dispersing it into a rainbow of colors. Diamonds sparkle and dance with colored light; each of its dozens of facets ...

While too many songs to count reference the glitz and the glam, the sparkle and shine ... The Australian icon compares herself to a white diamond, staying strong and brilliant under rough conditions.

The glittering diamonds sparkle the same but there are key differences: mined natural gems are more than a billion years old, while laboratory-made rocks are new and cost less than half the price.