For the first time ever, ArtyA brings Nano-Sapphire technology into the watch industry to change the color of the sapphire crystal case itself. In natural light, the case has a deep blue color, but when exposed to artificial light (6500k or above), the case instantly and completely changes color to a translucent, mysterious green. This new technology has never been used before and is exclusive to ArtyA, for the Purity Tourbillon Chameleon. Following this incredible technical breakthrough, many other Nano-Sapphire color cases for the ArtyA Purity Chameleon will be presented in 2022 in unique 1-of-1 versions, changing, for example from red to green, yellow to orange, purple to green, and more.