I am currently the Digital Coach for the City of London and the West, within the London and Midlands Region. My role in a nutshell is to coach our leaders on sustainable banking whilst making the lives our of customers easier.
(There is also genuine color-change sapphire which mimics alexandrite, as well as color-change garnet that can be a real fooler.). The first thing to do is check the refractive index of the stone, since each material has unique optical properties.
A color change stone changes color between two really obvious different colors, like Alexandrite going from bluish-green to pinkish-purple. Other more well known color change stones are Sapphire, Diaspore, and Garnet. color shift stone will show a change of hues within the same basic color family, such as from yellowish green to grass green, or from yellowish red to brownish red. The latter is not really a color change, just a shift in color.