Late Victorian Diamond Crescent Brooch jade Set with a highly domed

Set with a highly domed rock crystal centre that captures the light quite beautifully

I can't find much online about John McKean Esquire

enamelled St Christopher

or a brooch/pendant back - swipe to see

With a simple machined border

Late Victorian Diamond Crescent Brooch jade Set with a highly domedDATE: Victorian, c. 1890 Striking antique crescent brooch dating from the late Victorian era, circa 1890. It's set with three central icy white diamonds with further graduated diamonds at each of the points, with fine millegrain detailing. Crafted in 15 karat gold and platinum throughout. STONES Old cut diamonds MEASUREMENTS 5. 3 x 0. 4cm WEIGHT 3. 57g MARKS No marks present, tests as 15k gold and platinum CONDITION Good, few scratches to the platinum