If I remember, the hardest is diamond. And some where down the scale include
granite, quartz, and talc is way down the list. Maybe you should contact
some other geological supply houses, and see if they have kits with more
samples of hardness test stones.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"btilley" wrote in message
oups.com...
Can anyone recommend a good home test kit to test for hardness?
I bought a $10 kit at Home Depot, but I got only two samples out of it,
and it didn't seem to be as precise as I would like.

Any suggestions?

Thanks

Brian