These ornaments were made using the very unique but not well known Korean traditional weaving technique which is called 'Noyeokgae'.
'Noyeokgae' means a string made by cutting long and twisting paper called 'Hanji'. It is more well known as 'Jiseung' to the public than the pure Korean word, 'Noweokgae'.

Jiseung craft is a Korean traditional craft technique that originated in the days when paper was scarce, when scholars cut long and twist the paper of their books they had finished studying, and then wove into single and double strings to make various objects.

The scholars who preferred to make somthings rather than study are guessed that they might express their great creativity with papers as materials.
It is likely that paper craftworks would be used as a luxurious daily necessities of high class people at that time when goods were scarce.
Considering the time and efforts that melts into it, Jiseung craftworks are comparable to any other luxury items in the world.
Also, since Korea was the only nation that made objects by twisting paper, I think it is worthwhile because of its rarity.
There is a saying that silk lasts a hundred years, but paper lasts a thousand years.
As such, 'Hanji' has excellent preservation and it is very strong and hard but light, so I think it is a very suitable eco-frendly material for creating a sense of volume in jewelry making.