Stone Knots: the anxieties and difficulties of raising children. THE STORY BEHIND THE D KNOTS My youngest son was struggling with drug addiction so I decided to make three knots in his honor, to represent my frustration: D Knot #1, D Knot #2 and D Knot #3. Just like my son, this work of art is a study in contradictions: a hard, heavy stone that appears to be pliable, graceful and elegant. D Knot # 3 was created in 2007. It is carved from a single piece of Sirocco Marble from Italy. Dimensions" 10”h X 17”w X 7”d.