This magnificent Blue John vase is of exceptional colouration and scale. The considerable weight of the body strongly supports the theory that the black Ashbourne marble socle is original - as a Blue John socle would not withstand the pressure of the weight of this vase. A related Blue John vase, although of much smaller scale (13½ in. high) was commissioned by Sir William FitzHerbert's near neighbour Sir Nathaniel Curzon, 5th Bt. (1726-1804), later 1st Baron Scarsdale, for Kedleston Hall, Derbyshire (sold by The Kedleston Estate Trustees in these Rooms, 4 July 2002, lot 121).