The ring falls on a US Mandrel at a size 9. 

The Turquoise measures approx. 16mm by 12mm.

The face of the ring is 35mm north to south. It is fully hallmarked, has been tested and verified. It weighs 11.4 grams. There are no problems. This item is pre-owned and there will be ordinary and normal use marks. Comes from a clean, smoke-free home.