Victorian era old mine cut diamond flush set ring

This is a Late Victorian-era old mine-cut diamond ring in a heavy 18k gold setting. The old mine-cut diamond measures approximately .90 carats. Its approximated quality is H/I color and VS2 clarity. The band's interior has an engraving that has nearly worn away with time.  There is a marker mark visible, Hickslay & Co. English in origin. Circa 1890. 

Size 5.50, can be resized.