Third-largest diamond found in June, then a bigger one days later. What's behind the monster gem boom?
- Written by Jodie Bradby, Professor of Physics, Australian National University

A mega diamond of a staggering 1,174 carats was recently recovered from the Karowe mine in Botswana, making it one of the largest natural diamonds ever recovered.
More remarkably, the stone was found alongside several other similar diamonds weighing 471, 218 and 159 carats — suggesting the original diamond could have had a...