From the article by Rinzin Wangchuk
The brocade-embroidered crown HM Jetsun Pema Wangchuck
donned at the wedding ceremony in Punakha depicts two Ja Tsherings (phoenix) or the mythical longevity birds. The male and female birds symbolise the blissful relationship between the King and the Queen.
“It’s also a symbol of inseparability in method and wisdom,” Dasho Sangay Wangchug of the Privy Council, explained. The crown also has a khorlo or the wheel of dharma between the male and the female bird.
The wheel signifies the power that the King and the Queen is bestowed with to rule in a way that launches the country into a new era of continued peace and prosperity.
The lotus beneath the khorlo is for purity of love and devotion for both the King and the Queen.
Lhadrip (scroll painter) Lopon Ugyen, who designed the crown and had it embroidered in Hong Kong, said the frame of the crown was carved in such a way that they accommodated all the strokes of different colours (bjadri).
The embroidery of the tshebum on the crown’s rear is also a symbol Amitayu or the Buddha of long life.
The overall dark blue borders is in keeping with the colour of the sky that is representative of the power she wields which is limitless like the open sky.