Pic Title: Emerald Related Phrase: 祖母绿 Related pictures: Emerald Source: http://a1.att.hudong.com/ Pic Description: 　　Hardness: 7.5 - 8.0 　　Cleavage: translucent 　　Streak: white 　　Specific gravity 2.5-2.8 　　Density: 2.70 - 2.78 g / cm ³ Translated by Google No. / 10 Picture               Slide Show

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