Why doesn't diamond show up in X-ray imaging? Diamond is the hardest substance ever known, and as we know, X-ray radiation is produced when a cathode ray of high frequency hits a very high atomic mass target. But I am amazed: why doesn't diamond show up in X-ray imaging?
[Physics] X-ray imaging and diamond
diamondimagingx-rays
Best Answer
Exactly how and to what extent diamond shows up in x-rays depends on factors such as type of x-ray apparatus, size of diamond, orientation and so on.
Carbon has an atomic mass of 12. That's fairly low.
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From http://www.diamond-materials.com/EN/products/cvd_for_xray/xray_windows.htm
However you can use X-rays to make useful images of diamonds
X-Ray absorption is related to density, diamond is about 3.5 times as dense as water. 3,500 kg/m3 or 3.5 g/cm3.