Norwegian Crown Jewels: The King’s Crown - 1818 by goldsmith Olof Wihlborg. The crown is a corona clausa (closed model) consisting of a ring carrying eight hoops made of gold and surmounted by a globe of blue enamel and an amethyst cross on top of it. Its front is adorned with a huge green tourmaline, a gift of the Brazilian consul in Stockholm to King Charles III Johan.
Close up of Queen of Denmark's “poiré pearl tiara”. It consists of eighteen large pear-shaped (poiré) pearls hanging from diamond arches. It was probably made in Berlin in 1825 and was a wedding present from King Friedrich Wilhelm III of Prussia to his daughter Louise when she married Prince Frederik of the Netherlands.(photo by xudros, via Flickr)