Jade Plaque 新石器時代晚期玉璜

 
形制特徵：圖中的玉璜呈弧形，兩端略寬，中間較窄，這是典型的古代玉璜形制。這種形制在中國新石器時代晚期至商周時期較為常見，尤其是良渚文化（約公元前3300年至公元前2300年）和商代（約公元前1600年至公元前1046年）。
材質與色澤：玉璜呈現出淡綠色，帶有局部褐色沁色，這種色澤和玉質老化特徵與良渚文化或商代的玉器相符。良渚文化的玉器多使用軟玉（透閃石），表面常因長期埋藏而出現沁色。
製作工藝：玉璜表面有細密的規律小孔，這種鑽孔工藝在新石器時代晚期已較為成熟，特別是良渚文化以精細的玉器加工聞名。同時，玉璜的邊緣略有磨損，顯示出使用痕跡，這也符合古玉璜表面佈滿細密的小孔，排列較為規律，類似「穀紋」（小米粒狀凸點）。這種紋飾在良渚文化的玉器中非常常見，象徵農業豐收和自然生機。
 
Shape Characteristics: The jade huang is arc-shaped, slightly wider at both ends and narrower in the middle, which is a typical form of ancient jade huang. This shape is commonly seen from the late Neolithic period to the Shang and Zhou dynasties, particularly in the Liangzhu culture (circa 3300–2300 BCE) and the Shang dynasty (circa 1600–1046 BCE).
Material and Coloration: The jade huang exhibits a pale green color with localized brown staining, a characteristic of jade aging that aligns with artifacts from the Liangzhu culture or Shang dynasty. Liangzhu jade artifacts often use nephrite (tremolite) and develop such staining due to prolonged burial.
Craftsmanship: The surface of the jade huang features finely spaced, regular small holes, a drilling technique that was well-developed by the late Neolithic period, especially in the Liangzhu culture, which is renowned for its exquisite jade processing. Additionally, the edges show slight wear, indicating signs of use, consistent with ancient jade objects used as ritual items or ornaments.
The jade huang is covered with finely spaced small holes arranged in a regular pattern, resembling "grain patterns" (small, millet-like raised dots). This type of decoration is very common in Liangzhu culture jade artifacts, symbolizing agricultural abundance and natural vitality.