Sachi Copper We added two new color ways in our Sachi rug design - wasabi and copper on a natural brown ground. As part of our Natural Grounds collection, this rug was made using untreated, 100% natural wool, which greatly reduces the amount of dye used in making the rug. 100% wool, tufted. Available in Copper, Wasabi or Black Bean. Rugmark certified. Imported.