Gemstones have been a topic of fascination to human beings for centuries, not just for their beauty, but also for how rare ...

This 140.64-carat diamond was once part of the French Crown Jewels and has adorned figures like Louis XV and Napoleon ... making it one of the most famous diamonds on public display.

Laid out like an orchestra in a quiet gallery room, 40 colorful gems have one of the planet’s most distinguished conductors: ...

the Portuguese Diamond, the Hooker Emerald — evoke both the grand realm of history and the dark world of the modern mystery novel. But the most famous of all the gems — not the biggest ...