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

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

Shiny blackrock? : r/whatsthisrock

Shiny black inclusions? : r/whatsthisrock

So You Found a Shiny Black Rock: 6 Things it Might Be

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

Shiny Scaly Black Rock Found in NY : r/whatsthisrock

What is this black material on the surface of this stone? Almost

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

Black flint looking rock. I thew it on the ground and a chip broke off

Rock Identification Guide

Shiny black rock with separate green crystal(?) Embedded inside