old stock IPHB Kingman turquoise handmade sterling silver statement ring size 6

old stock Ithaca peak high blue Kingman turquoise cabachon is set in a handmade sterling silver statement ring size 6
I cut and polished this turquoise cabachon from rough material that came from the mine in the 1950's They didn't get much of this high grade turquoise
The turquoise cabachon is 15 x 14 mm and 6 carats
comes with a black velvet gift box