FMF - Friends of Minerals Forum, discussion and message board

[ALshawani]

I didn't recognize the stone yet, the density of stone from 2.60 to 2.99
The hardness is higher than 8.5

[ALshawani]

This is the same type

[Bob Carnein]

It looks, to me, like a piece of quartzite. How did you measure the hardness?

[ALshawani]

with Masonry Drill Bit

[kushmeja]

Looks like carnelian or sard, which are basically just slightly different forms of Quartz. But they wouldn't be an 8.5 hardness and should be closer to 7. An 8.5 hardness is quite high, so I would try verifying the hardness with something aside from the masonry bit if you can.

[alfredo]

Being as opaque as it is, I'd call it jasper, although the boundaries between quartz varieties are rather fuzzy.

[James Catmur]

Does it scratch normal glass?

[ALshawani]

I tried the knife and the screw and finally the bit of the drill, and they were all scratched by the stone. The thing that revived me the most is the hardness of the stone.

[ALshawani]

Yes it scratches the glass

[ALshawani]

The stone is translucent to translucent. Perhaps some external impurities are affecting the transparency