Iranian Crown Jewels spinels are the six surrounding the top of the mace, each weighing 40 carats (8 g). Malecka, A. "The Mystery of the Nur al-Ayn Diamond", in: Gems & Jewellery: The Gemmological Association of Great Britain vol. 23, no. 6, July 2014, pp. 20–22. https://issuu.com/jeweller/docs/jeweller_g_j__sept_2014_/58 Malecka, A. "Daryā-ye Nur: History and Myth of a Crown Jewel of Iran", Iranian Studies vol. 51 (2018), https://dx.doi.org/10.1080/00210862.2017.1362952 Meen, V.B, Tushingham, A.D. Crown jewels of Iran, Toronto 1968. Iranian Crown Jewels The Iranian National Jewels (), originally the Iranian Crown Jewels (), include elaborate crowns, thirty tiaras, and numerous aigrettes, a dozen bejeweled swords and
Crown Jewels of the United Kingdom on three consort crowns. A small number of historical objects at the Tower are either empty or set with glass and crystals. At a coronation the monarch is anointed using holy oil poured from an ampulla into the spoon, invested with robes and ornaments, and crowned with St Edward's Crown. Afterwards, it is exchanged for the lighter Imperial State Crown, which is also usually worn at State Openings of Parliament. Wives of kings are invested with a plainer set of regalia, and since 1831 a new crown has been made specially for each queen consort. Also regarded as Crown Jewels