Hackmanite was first discovered in Brazil ,samples of this gemstone were discovered in Badakhshan, Afghanistan and Mogok, Burma.

Some of the most highly sought after varieties of these gemstones are the ones that change from a lighter color to a much more intense and deep shade of purple. The change does occur pretty instantaneous though the return of the original color may take some time. That is exactly why these gems are so popular

Hackmanite has the ability to change its colors, something that it can easily do when it is exposed to any type of UV rays. This does not just include the UV rays from the sunlight but also from UV lamps. This ability is known as “tenebrescence”, which is a kind of reversible photochroism.