What is this?

[Rexoy]

I found this whitish and very hard "rock", kindly help me identify it, thanks!

 

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[PaddyB]

Piece of Quartz I would guess. Should be 7 on the hardness scale, so will scratch most steels and will be scratched by few things except Diamond.

 

[Back-of-the-boat]

I think quartz also, not quite milk quartz and not crystal quartz either a mix of both.

 

[Oddjob]

Looks like a Kidney stone I passed back in 98.

You should go wash your hands.

 

[Rexoy]

Thank you, by the way, this has no value?

 

[PaddyB]

Thank you, by the way, this has no value?

Not really - quartz is extremely common all over the world. If it were a perfect clear crystal it would have some value to the crystal addicts, but only a few dollars/pounds. This one is more like an addition to your rockery!

The beaches in Cornwall have stacks of this stuff and a lot of the sand is just ground up quartz from millions of years of erosion.

 

[Oddjob]

Thank you, by the way, this has no value?

Neither did mine, really more trouble than it was worth.

 

[Limitool]

Neither did mine, really more trouble than it was worth.

Better luck next time Oddjob...