In real life, the color is a dark green-- for whatever reason, the combination of the Alexandrite's optical properties and the camera's sensors makes it appear light purple.  In sunlight or under a daylight equivalent bulb, it will appear a more crisp grass green, then duller green to purple (especially near the very top) under incandescent. 

This is a very nice miniature, and the recent finds at this location have actually make a sixling alexandrite fairly obtainable-- in previous years good examples were nearly impossible to find (except from Brazil, though the quality has never been quite as good) and always prohibitively expensive.  This isn't exactly cheap either, but compared to what you might pay for a Russian example of lesser quality, this is quite good. 

The color change on this one is pretty good.