STERLING SILVER BLUE/GREEN STONE RINGS SIZES 9 & 6.5 925 SIGNED

STERLING SILVER BLUE/GREEN STONE RINGS SIZES 9 & 6.5 925. The turquoise ring is size 9.5 marked 925 and signed, looks like Puravida. The other ring which I think is a form of turquoise also is marked 925 and signed with initials JC, I believe.