wrote:

...
Sure, but what has that to do with buying stuff from the store?

I don't do recycled beer.


Actually, there are material harder than diamond ... this makes diamond,
actually, less appealing for even industrial uses:

http://24carat.co.uk/harderthandiamondframe.html

Making your question even more valid, i.e. the part, "Sure, but what has
that to do with buying stuff from the store?" So, consider it answered!

Regards,
JS