Native American natural Arizona turquoise solid sterling silver size 7 ring

This is a superb Native American natural Arizona turquoise solid sterling silver size 7 ring. It is part of an old stock from years ago. The turquoise is huge and has gorgeous brown matrix most probably from the Royston mine. The ring weighs 9.3 grams. Stamped 925 for sterling silver and OP, the artisans stamp. New with tags.