Valdani Pearl Cotton Ball Size 8 73yd Two in the Caribbean. Perle Cotton PC 8. Two in the Caribbean. Valdani Pearl Cotton is Colorfast and always hand-dyed. It is perfect for embroidery crochet wool applique embellishment quilting rug hooking and fringe making. This sampler pack contains 12 solid and variegated colored balls. Size 8. The Medium Weight - Can be using in machine quilting and stitching for bobbin work.