这块亚历山大变色石在阳光下呈绿色，在白炽灯下却变成红色。

The ___alexandrite appears green in sunlight but turns red under incandescent light.

她六月份生日时收到了一枚镶嵌亚历山大变石的戒指。

She received a ring with ___alexandrite for her June birthday.