Commonly known as Agarwood or Aloeswood or Gaharu has been traded and highly coveted for millenias. The resinous wood is used for incense and medicinal purposes. While pure resin in distilled form is used as an essential oil as well as a perfume component. Agarwood is formed in the hardwood of aquilaria trees when they become infected with a type of mould. Aloeswood or Gaharu is a fragrant dark resinous wood used in incense, perfume and small carvings.