I've been doing some research on getting an Alexandrite engagement ring for my soon to be fiance. She has the most delicate light green eyes and they slightly change color depending on what she is wearing. It's also her birth stone. I've read most of the posts on here about Alexandrite engagement rings, and I've decided that I'm still going forward with my project. I'm hoping that some of you can give me advice regarding reasonable expectations for a good stone. I don't want anything larger than 1/25 cts. I'm having a hard time finding a stone that demonstrates the right color green, without turning a muddyish brown in mixed lighting. I found this stone on multicolour http://www.multicolour.com/detail/?-1295057503 I love the medium/light green in the daylight, but the color change to incandescent is weak and I'm really afraid of what it would look like in mixed lighting. Is this something typical of lighter green stones? I wanted to keep the project around 5k, but understand I might have to go higher (especially with the stone I'm looking at). Any help would be appreciated.