(Black Limba is just a variation in colouring, similar to spalting in some species, it's effectively a beetle 💩).
Korina is a beautiful tonewood, similar to mahogany in tone and grain.
Korina is used by PRS for bodies and necks and also some of the most prized vintage Gibson guitars were made using korina (Flying V, Explorer, Futura...)
For the standard neck blanks we have chosen the white limba variation, from a quarter sawn, kiln dried slabs with straight and uniform grain.
