The Imperial State Crown is formed from an openwork gold frame, mounted with three very large stones, and set with 2868 diamonds in silver mounts, largely table-, rose- and brilliant-cut, and coloured stones in gold mounts, including 17 sapphires, 11 emeralds and 269 pearls. At the front of the crown band is the large cushion-shaped brilliant, Cullinan II, the second largest stone cut from the Cullianan Diamond (also known as the Second Star of Africa). At the back of the band is the large oval sapphire known as the 'Stuart Sapphire'. The two large stones are linked by an openwork frieze, containing eight step-cut emeralds and eight sapphires, between two rows of pearls. Above the band are two arches (or four half-arches), each springing from a cross-pattee. The front cross is mounted with a large, irregular cabochon red spinel, known as the 'Black Prince's Ruby'. In its history the stone was pierced for use as a pendant, and the upper hole later plugged with a small cabochon ruby in a gold slip mount. The remaining three crosses are each mounted with a step-cut emerald mounted as a lozenge. The crosses alternate with four fleurs-de-lis, each with a mixed-cut ruby in the centre. Both crosses and fleurs-de-lis are further mounted with diamonds. The crosses and fleurs-de-lis are linked by swags of diamonds, supported on sapphires. | Anything