This a beautiful London blue Topaz Topaz.
The 6 mm checkerboard cut stone is eye clean and set in14k rose Gold with 4mm wide shank in a vintage style floral pattern.
Topaz rates an 8 on the Mohs scale for hardness.
I can make this ring for you in any size between 4 and 10 1/2.
Specify your size at check-out.