Jacquard Blanket - Opal SpringsPendleton Blanket Opal Springs These Pendleton Opal Springs blankets are robe size, which is the size preferred by Native Americans for ceremonial purposes and wrapping about oneself as a robe. These blankets fit perfectly over a double bed and can be used for wall hangings or just for cuddling up on the sofa. Opal Springs Near the tiny town of Culver, early travelers to Oregon found a natural spring with jewel like stones. They named this place Opal