瑾（jin）
Name meaning
瑾 (jin) means fine jade and, by extension, inward moral beauty. In a given name it should suggest valuable character and quiet radiance, not luxury or decorative preciousness.
Practical naming use
Use 瑾 (jin) for a refined, jade-like and morally polished name. It suits calm strength, scholarship, public service, literature or a person whose value should feel contained rather than showy.
Pair 瑾 (jin) with restraint or culture: 瑾宁 (Jinning), 瑾文 (Jinwen), 瑾安 (Jinan) or 瑾雅 (Jinya). Avoid another gem or luxury-coded character unless the name intentionally leans ornate.
瑾宁 (Jinning): Jin contributes fine jade, moral beauty; Ning adds peaceful, settled.
Reference
MOE Idiom Dictionary, 懷瑾握瑜 (huai jin wo yu)
Historical / name-use references
諸葛瑾 (Zhuge Jin)
Zhuge Jin (174-241) was a Wu statesman in the Three Kingdoms period. Sanguozhi, juan 52, opens with 諸葛瑾字子瑜 (zhu ge jin zi zi yu), giving direct premodern personal-name evidence for 瑾 (Jin).