This long, slender vintage 1960's Navajo sterling ring is set with a deep blue/green turquoise stone and a narrow carved shell or mother-of-pearl. The face of the ring measures 1 3/8" long, and the band is size 5.5. It has no hallmarks, but acid-tested as 925 sterling silver. It has wonderful dark patina and has not been polished. The band is slightly out of round, but this does not affect its beauty or wearability in any way.