Hetian Jade (Nephrite) AI Identification
和田玉是中国传统名玉，属于软玉（透闪石）类，以新疆和田地区产出的最为著名。和田玉以其温润细腻的质地、含蓄内敛的光泽著称，被誉为"国玉"。按颜色可分为白玉、青玉、碧玉、墨玉、黄玉等，其中羊脂白玉最为珍贵。
质地细腻度：用手触摸感受温润程度，越细腻越好
油脂光泽：和田玉特有的油脂光泽是重要鉴定特征
籽料皮色：天然籽料皮色过渡自然，假皮色浮于表面
产地特征：新疆料、俄料、韩料、青海料各有不同特征
白度与润度：不仅要白，更要润，"白而不润"价值有限
常见和田玉仿品包括：阿富汗玉（大理石）、韩料冒充新疆料、染色石英岩、玻璃制品、合成材料等。此外，假皮色（人工染色的籽料皮）也是常见的造假手段。
AI可以识别和田玉的主要品种（白玉、碧玉、青玉等）、初步判断产地特征、评估质地细腻度和颜色等级。对于籽料皮色的真假判断有一定能力，但复杂情况建议实物鉴定。
Hetian jade (nephrite) is a traditional Chinese precious jade, belonging to the tremolite-actinolite series. The most famous specimens come from the Hetian region of Xinjiang. Known for its warm, fine texture and subtle luster, it is called "National Jade." Varieties include white, green, jasper, black, and yellow jade, with mutton-fat white jade being the most precious.
Texture Fineness: Feel the warmth and smoothness by touch; finer is better
Greasy Luster: The characteristic greasy luster of Hetian jade is a key identification feature
Seed Jade Skin: Natural seed jade skin has gradual transitions; fake skin sits on the surface
Origin Features: Xinjiang, Russian, Korean, and Qinghai jade each have distinct characteristics
Whiteness & Warmth: Not just white but warm; "white without warmth" has limited value
Common Hetian jade imitations include: Afghan jade (marble), Korean jade sold as Xinjiang jade, dyed quartzite, glass products, and synthetic materials. Fake skin color (artificially dyed seed jade skin) is also a common fraud technique.
AI can identify major Hetian jade varieties (white, jasper, green), make preliminary origin assessments, and evaluate texture fineness and color grade. It has some ability to judge seed jade skin authenticity, but complex cases require physical examination.