The Ring falls on a US mandrel at a US size 6.5, UK size M 1/2. The face of the ring measures 28mm north to south and 12mm east to west. The stone is an Turquoise, it is 13mm north to south and 3mm east to west. It is not hallmarked, but has been tested and verified, weighing in at 5.3 grams. There are no problems. This item is pre-owned and there will be ordinary and normal use marks. Come...s from a clean, smoke-free home. SH49-112-2p-AB15-U49X-US49X