Alexandrite Cat's Eye 1.68 caratsNatural Alexandrite Cat's Eye A natural Alexandrite Cats Eye at 1. 68 carats is indeed a rare and valuable find. This gemstone combines both the color changing properties of Alexandrite and the distinct cats eye effect, which is especially desirable among collectors and gem enthusiasts. When evaluating the quality of a 1. 68 carat Alexandrite Cats Eye, consider the following: 1. Color Change: Look for a noticeable color shift, typically from greenish