RG6388 Montana Silversmiths Circle the West RingMontana Silversmiths Circle the West Ring. The Circle of the West Ring features alternating turquoise and howlite stones Width: 0. 3 Height: 0. 1 Length: 0. 3 Materials: Silver over sterling silver. Crafted turquoise. Crafted howlite. Montana Armor to prevent tarnish. All Montana Silversmiths jewelry and accessories have a limited lifetime warranty on manufacturing defects when accompanied by a receipt.