Please tell me what this is

[Williamstewart]

 

[Tpmetal]

Either "glass slag" (for lack of better terms) or a cool rock

 

[Gambrinus]

It might be serpentine.

 

[Williamstewart]

When I broke it in half it made the black spices in it

 

[ecmo]

Sorta resembles jade but I know nothing about rocks and minerals.

Don

 

[coil2thesoil35]

Just plain quartz man I've found it blue and pink and purple

 

[Williamstewart]

No it's not like quartz and quartz s harder and doesn't breake like that

 

[mrs.oroblanco]

I don't know what it is, but I know it is not jade. Jade doesn't just break off - 2 hours on a wet diamond saw barely cut a small piece.

Mrs. O

 

[CaptEsteban]

Where was it found ?
Amazonite ??

 

[Williamstewart]

I got it in a estate auction

 

[Charlie P. (NY)]

In NY I have heard that called "karst". It is the matrix that quartz (and gypsum) forms in. I believe it is dolomite and other rocks - the kind that caves form in because water allows carbolic acid to form and to remove portions of it (hence the odd cavities in your sample). Sedimentary carbonate rock.

 

[Williamstewart]

That