Lowest price:$99.99Description: min .75ct 6x4mm oval cabochon cats eye alexandrite. alexandrite was discovered in 1830 in the emerald mines of the southern ural mtns. it is named for the russian tsar alexander ii. it's a rare stone that needs two kinds of stones to come together one that contributes aluminum/beryllium and the other chrome which rarely occurs in nature. it has natural color change from green to a red depending on the type of light and can be found with chatoyancy or cat's eye effect.