It was commissioned by the Queen from the then Crown jeweller Garrad in 1957 to match a gifted necklace and earrings from the President of Brazil to mark her 1953 coronation.
The foursome traveled together to the Horse Guards Parade for an official ceremonial welcome, where they were greeted by Queen Elizabeth and Prince Philip, a royal salute, and a playing of the Spanish National Anthem.
King Felipe then shared a carriage with the Queen for the traditional procession down the Mall while his wife shared a ride with Prince Philip.
MPs had threatened to walk out of his speech to Parliament yesterday if Felipe repeated his claim that British rule was a 'colonial anachronism'.
THE QUEEN held a state banquet for King Felipe of Spain last night, hours after Gibraltarians accused him of threatening their future. "But the strength of our friendship has bred a resilient spirit of cooperation and goodwill".
The leaders also discussed trade and investment, security and defense issues, the statement of the press service said.
It is the first state visit by a Spanish king to the UK since Felipe's dad King Juan Carlos made the trip 31 years ago.
The territory's status was "not up for discussion or negotiation", he added.
Manley's communique also highlights that "Spain and the United Kingdom are close allies and partners in the NATO, the UN, the G7 and the G20, amongst many other international organizations". On Friday, the royals visited the Francis Crick Institute before heading to Oxford to visit the Weston Library.
"I am confident that through the necessary dialogue and effort our two governments will be able to work... towards arrangements that are acceptable to all involved", he said.
- Kylian Mbappé: "No sé si me voy a quedar en el Mónaco".
- CP3 on Harden: 'We're Going to Help Each Other'
- Tragedia en Senegal: 8 muertos y 49 heridos en partido de fútbol
- Nevada provoca masivo corte de electricidad en Santiago — Chile
- Akhmetshin, el ex espía ruso que se reunió con Trump Jr
- Ataque deja un civil y dos policías muertos en Michoacán
- Reabren tras ataque explanada de Mezquitas — VENEZUELA
- Quake hits off North Korea but experts rule out nuke test
- Panamá y EU se acercan a siguiente ronda de Copa Oro
- Randazzo: "Cambie la política económica, está destruyendo el país"