Windowpane Hand Knitted Rug Brilliant jewel tones illuminate this rug which calls to mind the legendary stained glass windows of Chartres. Ruby reds, vivid golds, luminous greens and sapphire blues combine in a striking design that is resplendent in both traditional and modern settings. Cotton. Judi Boisson merchandise shipped within the state of New York is subject to sales tax. Due to variations in New York sales tax by county, tax will be calculated and added to your bill when the product is shipped and will not appear on your order form.