Most expensive wood
The most expensive wood in the world comes from one of the rarest trees. The African Blackwood. The wood is used primarily to make woodwind instruments like clarinets and oboes and its value is around $25,000 per cubic meter. Needless to say, the African Blackwood is an endangered species and only found in Tanzania and northern Mozambique, having been harvested to extinction in Ethiopia and Kenya. You’re very unlikely to come across a door made of this, it’s far too precious.