What are these shiny black rocks? They almost look like glass. Bonus feline formation. : r/whatsthisrock

I found some black glassy rocks in Lake Michigan, can anyone help

What are these black shiny rocks in my yard? They are about the

How to tell the Difference between Black Onyx, Jet, Apache Tear

The black parts form little stripes and are fine-grained. Granite

Help with identification please. Outside is black with crystal

What is this weird mess I found in my backyard? Black circles are

How to tell the Difference between Black Onyx, Jet, Apache Tear

Can anyone Identify this black glasslike rock for me please? : r

Found in Norway. Black and shiny rock : r/whatsthisrock

UPDATE* Big shiny metallic rock is strongly attracted to magnets

How to tell the Difference between Black Onyx, Jet, Apache Tear

I carried this 26lb monster 6 miles so I could ask you guys what

Black rock with what appears to have a fossil : r/whatsthisrock