Known as the “sacred frankincense,” this species was likely the source of the frankincense given to Jesus and traded extensively during classical times. The trees are found only in Oman and Yemen (although also found in Africa, the essential oils are distinct). They grow on limestone or volcanic rocks in arid valleys (called wadis) and on cliffs near the sea. Sacra is often considered to be one of the best quality frankincenses, and you can immediately sense the reason in the scent: from the bright, citrusy top notes, to the resinous heart notes, to the deep, broad, yet surprisingly gentle base notes, this one is a pleasure from start to finish.