The Royal Gold Cup or Saint Agnes Cup is a solid gold covered cup lavishly decorated with enamel and pearls. It was made for the French royal family at the end of the 14th century, and later belonged to several English monarchs before spending nearly 300 years in Spain. It has been in the British Museum since 1892, where it is normally on display in Room 40, and is generally agreed to be the outstanding surviving example of late medieval French plate. It has been described as "the one surviving royal magnificence of the International Gothic age". According to Thomas Hoving, former Director of the Metropolitan Museum of Art in New York, "of all the princely jewels and gold that have come down to us, this is the most spectacular—and that includes the great royal treasures."
The cup is made of solid gold, stands 23.6 cm (9.25 inches) high with a diameter of 17.8 cm (6.94 inches) at its widest point, and weighs 1.935 kg (4.26 lb). It has a cover that lifts off, but the triangular stand on which it once stood is now lost. The stem of the cup has twice been extended by the addition of cylindrical bands, so that it was originally much shorter, giving the overall shape "a typically robust and stocky elegance." The original decorated knop or finial on the cover has been lost, and a moulding decorated with 36 pearls has been removed from the outer edge of the cover; a strip of gold with jagged edges can be seen where it was attached. Presumably it matched the one still in place round the foot of the cup.
