Antique diamond ring

Antique three-stone diamond ring, circa 1890
Of rather unusual form, the shoulders of V-section with a central rib, mounted in gold and platinum

The central diamond approximately 1.25cts, the side stones approx 0.70cts each. Assessed as G-H colour SI clarity

The inside of the shank bears a faint inscription “Oct 15th 188?…...R.G.H”

Finger size currently UK - K, US - 5 1/8