如何鉴定和田白玉是否是羊脂玉

世人皆知和田玉以白为美，和田白玉及羊脂白玉名称不同，其实羊脂白玉是和田白玉中的极佳品种，多了羊脂一次，价值也能提高不少。羊脂白玉自古以来被人们极为重视，是玉中极品，非常珍贵。它不但象征着“仁、义、智、勇、洁”的君子品德，而且象征着“美好、高贵、吉祥、温柔、安谧”的世俗情感，白玉与之相比，略逊一筹。

如何区别羊脂白玉和白玉的不同呢，方法其实很简单：

两者颜色有别

和田白玉和羊脂白的颜色虽然都同为白色，但羊脂玉更佳的原因在于，它的白色不是纯白，可稍泛淡青色、乳黄色等，质地细腻滋润，油脂性好，可有少量石花等杂质，在灯光照射下会有白色如凝脂的感觉。然而一般普通的和田白玉的白度比不上羊脂玉，光润程度也比不上羊脂玉好。

两者成分不一

虽然羊脂玉份数和田白玉中较好的品种，所以成分都是透闪石，但是因为透闪石含量的不相同从而导致了品质上的不同。羊脂玉的透闪石高达99%，才可以称为极品，而一般的和田白玉透闪石含量相对较低，所以质地比不上羊脂玉的纯净。

两者水头不同

水头说的是玉的透明度，一般的和田白玉程半透明状态，而羊脂的好品质也提现在了它投过阳光的透明度明显会比其他一般的和田白玉好，水头也相对好很多。上佳的羊脂白玉近于无瑕，好似刚刚割开的肥羊脂肪肉，而光泽正如凝炼的油脂。

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