1、翠友在百度百科上查到的数据都是不准确的，而且也没有权威数据来源；这些资料可能都来源于某个贴吧或论坛的帖子，内容真实性有待考证（很多资料都不符合实际） 2、如果真的是要了解“密度”的话那可以看看《物理世界》杂志的一篇关于密度的文章，里面引用了一篇名为 "The Density of Quartz"的文章，其中提到： “Diamonds are the hardest， heaviest substances known. The mean density is 3507 kg/m^3 and average weight per cubic inch (1.69cm) is over 240 gms or a little more than twice that of an equal volume of water at its own density...Gem-quality corundum has been found to have densities as high as 3940kg/m^3， and even the rarest diamonds are only about 8% lighter in this respect. In fact we can conclude with reasonable certainty that gem-stones which we believe to be diamond will contain less than one-tenth of their actual mass as water.”(来源见下方链接）
