This pattern uses a special kit created for Yarnbox with 5 gradient colors going from light to dark of Silk Essence, each color is 130 yards so the total yardage is 650 yards.

The gradients are held double throughout, 2 strands of A to start, then 1 strand of A and 1 strand of B, and so on.

Purchase the kit here:

http://www.artyarns.com/patterns/silken-transitions-shawl/