Diamonds? They're everywhere. For every 10,000 of them mined, only one Paraiba Tourmaline is discovered. But isn't luxury measured by rarity? Imagine ...

What gives gemstones colors ... The presence of iron and titanium can give tourmaline shades of blue and green, while manganese can produce pink, red, and sometimes brown colors.

only one Paraiba Tourmaline is discovered. But isn't luxury measured by rarity? Imagine a gem so incredibly rare it practically glows from within—an electric-blue wonder that high-end collectors ...