Rois mages
The name of the gem is based on the tale of The Other Wise Man by Henry van Dyke. The story's hero, Artaban, was a wise man from Persia who set out to join the Biblical Magi in their journey to see the newborn Jesus. He purchased three great gems, one of which was a sapphire, to present as a gift to the newborn king. He never achieved his goal, and gave his gems to the needy instead.