Curls are structures that are produced by the split of a tree at the level of the first big branches or at the bottom of the tree close to the big roots. Curls are generally flat sliced.
Depending on how the veneer is jointed, the drawing can differ greatly.
Nowadays, the trend is "mixmatched" veneer : the repetitive pattern of bookmatched veneer is gone and homogeneity across a project can be better guaranteed.
The diversity of veneers that nature provides us with is huge, as are the tastes and perceptions of human beings. It is therefore not possible to produce a single quality that will satisfy the entire market. We grade each specie into 4 or 5 standard qualities that already offer a great range of possibilities. It is also possible to obtain specially graded veneers, but only on order.