Infographic on the chemistry of the coronation crowns: St Edward's Crown, the Imperial State Crown, and Queen Mary's Crown. The graphic shows the various gemstones in each crown and provides a brief description.
Click to enlarge

As England celebrates the coronation of King Charles III this weekend, the crowns will be the centre of attention. Combined, the three crowns used in the ceremony contain almost 6,000 gemstones — this graphic takes a look at their chemical compositions.

References and further reading