Here is a rare and unusual natural color-change sapphire from a brand new source in Mozambique. The stones from this mine are unlike anything we have seen from anywhere else in the world. It has a color-change from chartreuse (yellow-green) in natural light/daylight to golden yellow under incandescent/warm artificial light. This makes it the perfect stone for a collector or connoisseur of special gems. It is completely natural and unheated. While this stone does have some minor natural inclusions, it still has good brilliance and will look fantastic when set.