Blue Biggs picture jasper slabs have approximately 26 one inch squares of material in the slab. Size of the slabs are approximately 8 1/4″ x 3 1/2″ with a thickness of 3/16″-1/4″. (only 4 in stock). Blue Biggs is one of the premium jasper’s sought after. Stock 617s-26. There are a few vugs, but many beautiful cabochons can be made.