Blue sapphire which forms part of the British Crown Jewels
The Stuart Sapphire is a blue sapphire that forms part of the British Crown Jewels. It weighs 104 carats (20.8 grams) and is believed to have originated from Asia, potentially present-day Afghanistan, Sri Lanka, Myanmar or Kashmir.[1]
^Larif, Dr. Shihaan (14 March 2008). "Stuart Sapphire". Internet Stones. Retrieved 31 October 2022.