How much would this Alexandrite Color Change Stone be worth?
From the description of color change it sounds like sythetic sapphire imitating alexandrite. Alexandrite should be more to green and red rather than purple to blue. Due to the value of alexandrite it is not good to guess. Refractive index is the test to seperate. Some jewelers have the ability to test. R.I. is 1.76-1.77 for sapphire and 1.74-1.75 for Alex. http://www.moregems.