What is this?

[Massiesgirl]

I have tgeres stones and was hoping to get some idea what they could be.thank you.

 

Amazon Forum Fav 👍

Agony and Death on a Gold Rush Steamer: The Disastrous Sinking of the Side-Wheeler Yankee Blade - Grab it through Amazon!

[ArfieBoy]

The last five pictures look like natural obsidian to me. I have no idea what the first 3 pics are. Good luck with the I.D.'s.

 

[crashbandicoot]

Nice rocks,I don,t have any idea what they are!

 

[TheCannonballGuy]

Your first "stone" looks to me like Calcite crystals which formed on a round-ish rock of some other type inside a cave. (Back in college I was a spelunker/cave-explorer.)

Your other stone looks like what is called "slag glass"... which is not a naturally-occurring mineral like Obsidian.
Slag-glass definition:
"[FONT=&quot]Slag glass gets its name from slag, or the byproduct of steel production. When iron ore is smelted in that process, the remaining residue is a glass-like, often glossy material that takes on different colors depending on the minerals and elements present in the iron. The visual marbling of this slag is reminiscent of slag glass, however, the presence of actual slag in slag glass pieces depends on how it was created.[/FONT]"

Images of slag-glass:
slag glass def - Bing images

 

[oldmxrat]

Agree with Cannonballguy, looks like calcite and slag glass. Welcome to Tnet!