1930s Big Zuni Cluster Old Greasy Blue Turquoise Vintage Ring Old Pawn Size 10 JR 656

What a show stopper! Very hard to find real vintage rings this large. 19 hand cut turquoise stones in the best old oxidized turquoise blue, often called greasy as tgey look so delicious. Perfect traditional cluster design, the stones set off by silver raindrops and twisted wire. Possibly an unsigned Alice Quam, but I think it's too early.
Good old condition, great patina. Please notice stable crack in one stone.
Tested silver. Unmarked like most of the oldies. Original size never altered.
The ring is size 10 and weighs 18 grams. C 1930s
Inventory #JR 903