Queen Camilla honours grandmother with treasured jewel at tonight's State Banquet in Kenya

Cubitt was the daughter of Alice Keppel, who herself was famously the favourite mistress of King Edward VII.

Queen Camilla additionally wore a blue tunic top and palazzo-style trousers by one of her favourite designers, Anna Valentine.

Valentine designed the Queen's wedding dress to marry King Charles back in 2005.

Tonight, Camilla also opted for a diamond elephant bracelet, which looked beautiful on the 76-year-old.

President Ruto hosted the dinner for Their Majesties, as well as other esteemed guests from Kenya and the United Kingdom.

Queen Elizabeth II and Prince Philip were also honoured like this during their royal tour to the country in 1983.

WATCH NOW: King Charles and Queen Camilla at State Banquet

Upon arrival, Charles and Camilla were received by the President and his wife, First Lady Rachel Ruto, before meeting other guests at a short reception.

Both the Kenya and British national anthems were played before the start of the banquet.

The Archbishop and Primate of Kenya, Jackson Ole Sapit and the Chief Kadhi of Kenya, Athman Abdulhalim Hussein subsequently delivered the Opening Prayer.

President Ruto and King Charles are both expected to address the guests during the State Banquet.

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The King is expected to address the legacy of British colonialism in Kenya at some point during the royal tour.

In particular, the Mau Mau rebellion that took place between 1952 and 1960.

Earlier in the day, King Charles laid a wreath at the Tomb of the Unknown Warrior at the Uhuru Gardens.

He later visited the site of Kenyan independence, the Mugumo tree, where the Union Flag was brought down in 1963.