对古玉颜色的鉴别是玉器鉴赏与断代的重要依据。
It is essential to identify the colour of ancient jade in dividing the generation of ancient jade.
优点：完整，健康，无污点、斑点，无异臭味感，手工挑选，白玉颜色。
Advantages: perfect, healthy, without spots. No feeling of uncommon fume, handpicked, white jade color.
优点：不完整之马氏杯边角料。带有星状污黑斑点，大体干净无杂物，白玉颜色。
Advantages: incomplete Akoya Pearl Shell brims and Angle materials. With star shape black spots. On the whole, clean and without sundries, white jade color.
优点：不完整之马氏杯边角料。带有星状污黑斑点，大体干净无杂物，白玉颜色。
Advantages: incomplete Akoya Pearl Shell brims and Angle materials. With star shape black spots. On the whole, clean and without sundries, white jade color.
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