The Queen's name has now been engraved on a ledger stone alongside the rest of her family at the Windsor chapel where she was buried on Monday.
Her final resting place is alongside Prince Philip, and her parents whose names are also inscribed on the stone.
The late monarch was laid to rest together with the Duke of Edinburgh in a private service attended by the King and other members of the Royal Family, on Monday evening - following her state funeral at Westminster Abbey and committal service in Windsor.
Buckingham Palace said the inscription on the ledger stone in the George VI Memorial Chapel now has the names of the Queen, her parents and Philip, along with their years of birth and death.
The stone, which is new, has replaced the black stone slab set into the floor which had featured the names George VI and Elizabeth in gold lettering.
The fresh stone now contains, in list form, "George VI 1895-1952" and "Elizabeth 1900-2002" followed by a metal Garter Star, and then "Elizabeth II 1926-2022" and "Philip 1921-2021".
All four royals were members of the Order of the Garter, which has St George's Chapel as its spiritual home.
When Philip died 17 months ago, his coffin was interred in the Royal Vault of St George's, ready to be moved to the memorial chapel - a pale stone annexe added on to the north side of the building behind the North Quire Aisle in 1969 - when the Queen died.
The Queen's sister Princess Margaret, who died in 2002, was cremated and her ashes were initially placed in the Royal Vault, before being moved to the George VI memorial chapel with her parents' coffins when the Queen Mother died weeks later.
Windsor Castle is currently closed to the public and will reopen on September 29 when people will be able to see the chapel as part of a general tour of Windsor Castle, costing up to £28.50 for adults and £15.50 for children.
Charles is believed to have flown to Scotland on Tuesday with the Queen Consort to grieve privately, as the Royal Family continues its period of mourning for the Queen.
He and Camilla were pictured in a vehicle which arrived at RAF Northolt, reportedly bound for Balmoral - the estate on which the King's Scottish home of Birkhall is located.
Charles decreed on September 9, the day after the Queen died following her 70-year reign, that a period of mourning would be observed until seven days after the funeral.
Members of the Royal Family are not expected to carry out official engagements, and flags at royal residences will remain at half-mast until 8am after the final day of royal mourning.
They have been left bereft by the death of their mother, grandmother and great-grandmother, and at times their grief was palpable, with Charles looking emotional and close to tears at the state funeral.
He had travelled extensively in the days after his mother's death, as he toured the UK in his role as the nation's new monarch.
No date has been fixed for his coronation, but it is expected that, in line with royal precedent and due to the large amount of planning involved, there will be at least several months until Charles's crowning.
In a reflection of the outpouring of love and grief since the Queen's death, it is estimated that around a quarter of a million people paid their respects in person by viewing her coffin as it lay in state in London.
Culture Secretary Michelle Donelan said on Tuesday that her department was still "crunching the numbers" as to how many people had queued for hours to process past the coffin at Westminster Hall, but that she believed it was around 250,000.
The Department for Digital, Culture, Media and Sport said it would set out the final number "in due course".
St John Ambulance said that, together with London Ambulance Service - both of which helped during the national period of mourning, including caring for those in long queues to see the coffin - it had treated more than 2,000 people and taken around 200 of them to hospital, mainly due to existing health conditions, trips, slips and falls.
