It’s a smallish dark room but, wow, what a lot of sparklers. There are more than 10,000 diamonds set in tiaras, crowns (Diamond Diadem, above), brooches, swords, earrings and necklaces, on display at Buckingham Palace in a special exhibition Diamonds: A Jubilee Celebration (until 7 October).

These stunning pieces were acquired by six monarchs over three centuries.