This is an awesome Men's Solitaire Mine Cut Diamond ring.

The ring falls on a US mandrel between a size 11.5 and 11.75, the UK Size is W 1/2 to X. The face of the ring is 10mm north to south by 9mm west to east.

The diamond measure 5mm in diameter, approx carat weight of 0.50ct. It is I1 clarity with H/I color. It is fully hallmarked, tested and verified, weighing in at 10 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.