Queen Sonja was given this tiara by her husband, King Harald. The tiara can be worn as a necklace or a tiara. Sonja handed Mette-Marit the tiara, she showed it off for the first time in May of 2004 at the Pre-wedding of Crown Prince Frederik and Crown Princess Mary of Denmark. Many guessed it was given to Mette-Marit because she gave birth to the future Queen of Norway a few months before.
The Tiara has a matching necklace, a pair of earrings, a brooch (which can be a necklace pendant) and the necklace can become two bracelets.
Crown Princess Mette-Marit
Martha Louise wore the tiara at the wedding of Crown Princess Victoria in June of 2010.