One of the world's rarest diamonds, about the size of an egg or a large lollipop, is going up for auction next month and is expected to fetch $12 million to $30 million.

As processors overheat under growing demand, scientists are using diamonds — the world’s best heat conductors — to keep future computers cooler, faster, and more efficient.

Buying your first diamond can feel like a milestone - exciting, a little overwhelming, and definitely something to remember. Whether it’s for yourself or someone special, this decision is as emotional ...