Included in this lot is a Navajo Native American Merle House Royston turquoise sterling silver ring. This dual banded ring features a large expertly cut and polished Royston turquoise polished cabochon. Royston turquoise is known for its beautiful colors ranging from deep forest green to rich, light blues set off by a heavy, brown matrix.. The cabochon is accented by a twisted rope and beads. This gorgeous hand made Navajo ring measures a US size 8 ½” and is stamped on the back Merle House and marked Sterling.