[hbosch]

It doesn't exactly help your cause that many people also believe the cost of diamonds is artificially inflated as well.

[kedean]

The cost of diamonds IS artificially inflated. They are useful for purposes other than the one in which the price inflation is a big deal, but it is a demonstrable fact that the price is inflated.

[simoncion]

The cost of industrial diamonds is -one presumes- not subject to much artificial inflation.