Strange Metalic Purple Rock

[Metal Mick]

I have taken this metallic like rock to several jewelers. No one has any idea what it is so far. It is deff. not coal it is very hard, and has a purple hue to it I found it in a stream in Northern Connecticut.
If someone with a knowledge of rocks or minerals can help me identify I appreciate it

 

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[coin1921]

it could be river worn obsidian

 

[Metal Mick]

Thank you, possible but it's hard to show with this pic it looks different from any obsidian I've seen

 

[Metal Mick]

And I come across it all the time this is far more metallic and purple

 

[Broken knee]

It could be iron pyrite? HH
BK

 

[Broken knee]

Have you tried a streak test?
BK

 

[Back-of-the-boat]

Have you put a magnet to it.

 

[Rick (Nova Scotia)]

Hardness, Streak, and density you need to know to narrow it down.

"Metallic like" you say, does it make a noise on a metal detector ?

 

[tamrock]

Unsure here, but it has a strong resemblance of a piece of anthracite coal imo. Another thought would be gilsonite.

 

[Back-of-the-boat]

Galena

 

[antique man]

Could it be slag?

 

[Metal Mick]

It is non ferrous (magnet won't stick), and no streak. Very hard.

 

[Metal Mick]

No slag I have ever seen

 

[Metal Mick]

I have never had anyone id it, the closet I came was to some radiation type rock, fortunately is not