Royal blue is the single most sought-after sapphire color in the world. It's that deep, velvety blue with just enough violet to give it depth, without crossing into dark territory. Think of the sapphire in Princess Diana's engagement ring. We source royal blue sapphires from partner mines in Sri Lanka and Madagascar, where the finest specimens originate. Direct, no middlemen. What makes a true royal blue? The saturation has to be strong but the stone still needs to face up bright, not inky. In natural daylight it should glow. Unheated royal blues are exceptionally scarce and priced accordingly. Browse our current inventory below.