Tteoljam (떨잠) or a fluttering hairpin was considered by many the most magnificent of all hair ornaments and was worn by Queen and noble women with their keun meori and eoyeo meori haistyles during ceremonial events.
The hairpins were mostly rectangular, round, or butterfly shaped, made of jade and decorated with coral, malachite or pearl.
Bee, butterfly, and phoenix motives are attached to the end of a spring so that they flutter as one moves.
This spring is known as a tteol (떨) made of golden or silver thread.
These ornaments were used by binyeo, as well. A hairpin with such tteol decoration was known as a tteolbinyeo.