Looking to purchase? How about a perfectly natural octagon alexandrite, in its original platinum ring setting? Measurments are 15mm x 11mm. There is no red in this stone. Strictly green/aqua/violet. Color change is dramatic not only in indoor/outdoor settings, but from direct/indirect sunlight as well. If you are interested, contact me at the e-mail below.
Can you post link to the picture ( photo) of your ring?