Here is an actual hand coloured photo of St Edwards Crown from about 1904,also some information as well.
This is from a rare book called "The Book of the Pearl" by George Frederick Kunz and Charles Hugh Stevenson. London 1908
The Crown of St. Edward, the official crown of England, is used at each coronation. The original crown of this name was destroyed by the Republicans in 1649, but at the time of the coronation of Charles the II, another crown was made to take its place, under the direction of Sir Robert Viner. As far as can be known, this crown was an exact copy of the older one, which was worn by Edward the Confessor, and perhaps even King Alfred. The crown in use at present is of gold, richly studded with pearls and precious stones of various kinds: diamonds, rubies, emeralds and sapphires. There is a mound of gold on top, and on this a cross of gold ornamented with very large oval pearls, and attached to the top and the two others pendant from the ends of the cross. The present arrangement of the jewels cannot date back earlier than 1689, as the crown was found to be despoiled of them at the time of the accession of William and Mary. Those now in the crown are acknowledged to be inferior to the former ones.
As and add on, I would like to say that the firm of Viner, was still making cultlery and flatware in the Late 19th and early 20th century, as were known as Viner and Hall. I do not know if they still exist.
Hope this helps