Zandrite® is the brand name for a man-made stone that is highly photochromic. It is a chemically doped variety of glass, whose name is an allusion to alexandrite, an expensive naturally occurring color-change variety of chrysoberyl.
Accordingly, what is an alexandrite stone?
Alexandrite is a rare and highly valuable gem variety from the Chrysoberyl mineral family that displays a sharp change-of-color from blue-green in daylight to red/purplish red or brownish red in the artificial yellow light.
In this regard, how can you tell if a stone is real?
One important factor to keep in mind as you’re shopping for natural gemstones is their appearance. Natural stones will have flaws and no two stones will look exactly alike. If you find gemstone beads that are smooth and have no blemishes to speak of, then they probably have been altered in some way.