楚之白衍–戰國玉衍L. 13.2cm, W.2.8cm, T. 0.5cm, 45grams. 本器白玉雕琢, 兩端呈龍首形, 中央有雙龍淺浮雕, 中央及兩端各鑽一孔. 兩面對稱, 紋飾雕工採斜刀法及游絲雕法,紋飾華麗, 刀工精美. 古玉跡象有增生晶體及沁色, 冰裂紋等. 玉衍, 或稱玉璜, 係古代佩玉上部的横玉。 形似磬， 或似半環。本器紋飾及刀工有楚玉風格.
國語楚語下:王孫圉聘于晉，定公饗，簡子鳴玉以
相，問于王孫圉曰：「楚之白珩猶在乎？」對曰：「然。」簡子曰：「其為寶也，幾何矣。」曰：「未嘗為寶。楚之所寶者，曰觀射父，能作訓比率，以行事于諸侯，使無以寡君為口實。又有左史倚相，能道訓典，以敘百物，以朝夕獻善敗于寡君，使寡君無忘先王之業；又能上下說于鬼神，順道其欲惡，使神無有怨痛于楚國。疣藪曰云連徒洲，金木竹箭之所生也。龜珠齒皮革羽毛所以備賦，以戒不虞者也。所以共幣帛，以賓享于諸侯者也。若諸侯之好幣具，而導之以訓辭，有不虞之備，而皇神相之，寡君其可以免罪于諸侯，而國民保焉。此楚國之寶也。若夫白珩，先王之望也，何寶之焉？「圉聞國之寶六而已。明王聖人能制議百物，以輔相國家，則寶之；玉足以庇蔭嘉穀，使無水旱之災，則寶之；龜足以憲臧否，則寶之；珠足以御火災，則寶之；金足以御兵亂，則寶之；山林藪澤足以備財用，則寶之。若夫話囂之美，楚雖蠻夷，不能寶也。」本器有玻璃光現象.
Translation:( from 國語楚語(Guo Yu, Chu Yu) 下a classical Chinese history book that collected the historical records of numerous states from the Western Zhou to 453 BC. Its author is unknown was probably compiled beginning in the 5th century BC and continuing to the late 4th century BC. )
Carved with extra fine white jade, this is the object of Huang with two dragon heads from the exterior design on both sides and two low relief carving dragon heads at the center of the Huang. 45-degree slant carving style auspicious clouds are spreading nicely on the surface of both sides. This Huang has the characteristics of the State of Chu of the Warring States. According to the Chinese classics of the second volume of Kuo Yu Chu Yu, thus Huang may be the national treasure of the State Chu. Antiquity evidences include additive crystals, differential weathering, and diffusive marking. Similar items are seen in the museums in China (Late Spring Autumn Period Jade Huang, L. 10.9cm, W.3cm, T.0.2cm, unearthed in 1979 from the Ho Guo Dui graveyard #1, Guo Se County, Henan Province, a collection of the Artifacts Institute of Henan Province, Late Spring Autumn Period Jade Huang, L.8.75cm, W.2.4cm, T.0.2cm, unearthed in 1986 from Zenshan, Wu County, Jiangsu Province, a collection of Artifacts Management Commission of Wu County, Jiangsu Province.) Warring States Jade huang (white) Certificate
Appraisal Indexes:
- quality of jade: 10
- rareness: 10
- historical and cultural significance: 10
- workmanship: 10
- size:8
- condition: 10