In the world of gemmology, the South American country of Brazil plays host to a variety of precious gemstones.

They're everywhere. For every 10,000 of them mined, only one Paraiba Tourmaline is discovered. But isn't luxury measured by rarity? Imagine a gem so incredibly rare it practically glows from ...

The brooches feature diamonds, pink tourmaline gems and blue sapphires Two diamond-encrusted Cartier brooches once owned by millionaire socialite Virginia Courtauld are going on display for the ...