The Crown Jewels: The Queen Consorts pink ruby and diamond ring.
For her most recent royal foray in jewelled headwear The Queen chose the Girls of Great Britain and Ireland tiara. Bought with the money raised by a committee chaired by Lady Eve Greville, the crown was given to Princess Elizabeth as a wedding present by Queen Mary. Here she is at a Service for the Order Service of the British Empire, on 7 March 2012.
Cullinan diamond III and IV Brooch, commissioned by Queen Mary in 1911, and the Delhi Durbar Necklace and Cullinan Pendant, which is the Cullinan VII
the Sovereign's Sceptre containing the largest flawless cut diamond in the world (right)
The Queen Consort's Ring - part of the Crown Jewels exhibition at The Tower of London
Considered to be the most celebrated diamond in the Iranian Crown Jewels and one of the oldest known to man, the 186-carat Darya-i-Nur is a crudely fashioned stone measuring 41.40 × 29.50 × 12.15 mm. The name means Sea of Light, River of Light, or Ocean of Light. It is a table or 'taviz' cut diamond.
Papyrus Tiara: This tiara was made in 1925. It was given as a wedding present to Lady Elizabeth Bowes-Lyon. She then gave it to her daughter Princess Margaret. It is a tiara with papyrus-shaped mounts framed in scrolls separated with palmettes. The diamond trails arch above, surmounted by diamonds and a pearl.