Navajo handcrafted 2-stone ring. Circa 1970's, this vintage ring is a great example of jewelry of that era. Measuring approximately 1" x 1/2" its a perfectly sized ring. NAVAJO HANDCRAFTED VINTAGE RING Blue Gem turquoise is a rare, and is known for its blue-green coloring. Because Blue Gem turquoise is very hard, a high polish is associated with this stone, and unlike most turquoise, it won't easily change color.