The Ring falls on a US mandrel between a US size 7-7.25, UK size N 1/2. The face of the ring measures 19mm north to south and 16mm east to west. The stone is an Turquoise, it is 10mm north to south and 5mm east to west. It is not hallmarked, but has been tested and verified, weighing in at 2.7 grams. There are no problems. This item is pre-owned and there will be ordinary and normal use marks. C...omes from a clean, smoke-free home. SH49-83-2p-AB15-U49X-US49X