Taken from Tahki Stacy Charles, Inc. Books - Terra Collecton - 6th Edition - Soft Sculpture: "This collection features the sculptural nature of stitch-patterning in Terra Collection's eco-friendly yarns."
This pattern is in Tahki Stacy Charles, Inc. Books - Terra Collecton - 6th Edition - Soft Sculpture, page 11.
Size US 11 and US 10 straights and US K crochet hook are required but not included.