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It would be interesting to see if there is a popularization of gold bullion in the form factor of a spaghetti noodle. This would allow some amount of non-destructive testing based on thermal expansion, and semi-non-destructive testing by giving the unit something of a bending test. I guess the effectiveness would depend on what sort of metallurgy is possible with tungsten in order to impact its modulus of thermal expansion and elastic characteristics.
Another example of the ridiculous overhead for gold.
Not to disagree with you point, but one could also argue that it is also an indication of the ridiculous value of the element.
As I think about things, one could have a pretty handy and pretty fool proof device which consists of a water bath, a bending gauge and a length gauge all in one unit. This would measure density, thermal, and elastic properties in one fairly quick and easy run (assuming my spaghetti form factor bullion idea.) As a optional features, throw in some sort of a spectrometer to look for other elements and maybe a piezo operated device to characterize the resonate characteristics of the sample.
I officially claim intellectual property rights over all of the above ideas
