Antique Navajo blankets are known as one of the most expensive in the world due to the time that went into making them and their scarcity today. A 2018 story explained that a Californian man sold his heirloom Navajo blanket at auction for US$2 million! Considerably less expensive, but still an eye-watering amount, are Brunello Cucinelli's Italian-made cashmere blankets, which retail at up to AU$10,000 each.