Myanmar’s jade mines may yield great wealth—but they ... to experience a place so beguiling to 18th century Chinese imperial envoys that hundreds perished en route in the malarial wilderness.

The most expensive hues are Imperial Greens ... own unique geological conditions that produce high-quality jade. For instance ...

When it comes to toughness, jade ... comes from Myanmar. They may boast the greenest greens, but they can vary greatly in transparency and color, with a variety of names including imperial green ...