A -grading on a -dimensional simple structurable algebra and related fine gradings on the simple Lie algebras of type
We describe two constructions of a certain -grading on the so-called Brown algebra (a simple structurable algebra of dimension and skew-dimension ) over an algebraically closed field of characteristic different from . The Weyl group of this grading is computed. We also show how this grading gives rise to several interesting fine gradings on exceptional simple Lie algebras of types , and .