Agarwood (or just Agar) is a dark resinous heartwood that forms in Aquilaria trees (large evergreens native to southeast Asia) when they become infected with a type of mold. Prior to infection, the heartwood is relatively light and pale coloured, however as the infection progresses, the tree produces a dark aromatic resin in response to the attack, which results in a very dense, dark, resin embedded heartwood. The resin embedded wood is commonly called gaharu, jinko, aloeswood, agarwood, or oud… (More on Agarwood)