It's open at the back so is adjustable to fit any sized finger and it's stamped STERLING and NAKAI. In the pics, it's currently about a UK size R but it is easily made bigger or smaller. The face of the ring is 32mm north to south and 2.2cm east to west.
Navajo turquoise sterling silver ring vintage c1970. tbj03327. Fantastic real turquoise to this sterling silver Navajo ring from the 1970's. The sterling silver has been tested as there are no silver marks. Great colour to the turquoise see pictures. Size UK M, US 6.25 or internal diameter 1.675 cm or 0.6 inches. Size of had 2.2 x 2.2 cm or 0.9 x 0.9 inches. Weight 7.6 grams or 4.75 penny weight.
The exquisite piece of turquoise is from the Bisbee mine, Arizona and the silver has been shaped around the piece of turquoise to fit. The ring is stamped Sterling and has the makers initials LL. Light wear only commensurate with age to the silver.
THE NATURAL TURQUOISE MEASURES 2.4CM / 1.8CM OVAL. THE RING SIZE IS M 1/2. THE TURQUOISE IS SET INTO AN OPEN BACKED SETTING. THE WEIGHT OF THIS RING IS 24.4 GRAMS. UNMARKED BUT VERY CAREFULLY TESTED TO BE SOLID SILVER.