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.
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
- quality of jade: 10
- rareness: 10
- historical and cultural significance: 10
- workmanship: 10
- condition: 10