Hi, I have some corundum lab alexandrites, those are sold by
(lab)thaigem.com in the eBay auction. Those price is about $1 per
carat. The color change is from light-blue purple to red purple. The
Red purple color is clear and strong, but the light-blue is far from
I heard that there are better color change corundum ones, which have
also clear and strong blue color. But I’ve never seen such ones.
Does anybody know or have apparently better color change ones from
blue to red? What is the difference between my lab alexandrites and
I also want to know about hydrothermal chrysoberyl lab alexandrite. Is
the color change different between cheep and good(expensive) ones?