Historically, gems have been divided into precious and semiprecious classes. There are a number of semiprecious gems, many quite beautiful, but diamonds, rubies, sapphires, and emeralds continue ...

Right now, the hall has some especially precious cargo in its current exhibition, “ 100 Carats: Icons of the Gem World.” (And in terms of the exhibit as a whole, “100 Carats” is quite the ...

What processes in the depths of the Earth forge beautiful and precious stones? Their beauty has captivated us for millennia. Their cost can be extraordinary–some are even considered priceless ...

The gems seem to glow from within because light penetrates the surface and reflects off the inner layers. But then, you would expect luster to be a trait of the Gods' tears.

It’s time to take a look. Insofar as we’ve covered diamonds before in this space, let’s pivot to the Big Three of precious gems: emeralds, rubies and sapphires.