If I did not know the source 100% on this, I would have sworn this to be a Colombian or perhaps Afghani specimen of emerald. But I KNOW this came from Brazil and the trail is well documented, and I have to say I am genuinely surprised. This is a vibrant green, lustrous crystal of a rich green color - quite uncommon from Brazil. In person, it has more apparent luster. The termination is unusual in that it is prismatic (if shallowly so) instead of flat as usual for an emerald. (obviously not a Jonas tourmaline but it fit in well with this update and was also at Munich...)