While much of the discussion around such a sparkler focuses on cut and carat size, a stone's color is just as crucial. And ...

Only about 30 percent of natural diamonds are considered gem-worthy, and among those, less than 1 percent are fancy color diamonds—that is, diamonds of unusual color. While the latter come in ...

The farther the light travels, the more the colors separate, or "disperse." Bounce light inside a diamond just two or three times and the colors disperse spectacularly. Diamond-like substitutes ...