MIN .45CT MM VARIES OVAL ALEXANDRITE

min .45ct mm varies oval brazilian alexandrite. vs grade strong to very strong color change. 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 accounting for the rarity of the stone. it has natural color change from green to a red depending on kind light.