Literature Reference: 怀瑾握瑜兮，穷不知所示。——《楚辞·九章·怀沙》 Holding precious jade and fine gems, yet impoverished and unaware of what to display. Source from 'Chu Ci: Nine Pieces: Huai Sha'.
瑜:
The radiance of jade, auspiciousness and well-being, grace and composure.
瑾: Jinyu. In names, it often symbolizes jade and virtue, representing an outstanding demeanor and noble character.
Meaning: Yujin symbolizes precious jade, representing noble character and outstanding talent.