The Stewart Sapphire, which had been owned by the Royal House of Scotland for centuries, was also given to George III. The original owner of the sapphire was reputed to have been King Alexander II of Scotland, who had it set into his crown for his coronation in 1214. Edward I of England took the sapphire along with the Stone of Scone in 1296, during his invasion of Scotland. His grandson, King Edward III, later returned the jewel to his brother-in-law David II of Scotland.
StateThe Imperial Crown of India was created when King George V visited Delhi as Emperor of India. To prevent the pawning of the Crown Jewels, British law prohibited the removal of a Crown Jewel from the country. For this reason, a new crown was made. It has not been used since.
Stewart 17 Equations Gauss' Law Corrected - In 2013, mathematician and science author Ian Stewart published a book on 17 Equations That Changed The World. We recently came across this convenient table on Dr. Paul Coxon's twitter account by mathematics tutor and blogger Larry Phillips that summarizes the equations. (Our explanation of each is below):