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

Rock Identification Guide

Shiny blackrock? : r/whatsthisrock

What are these shiny black rocks? They almost look like glass

Shiny blackrock? : r/whatsthisrock

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

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

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

Beach Find: Black Rock with reflective silvery metallic lines

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

a rock a frien of mine found. the black spots are actualy prety

Wondering what this shiny black mineral is on the back of my

help please, anyone know what this shiny black rock with sparkles

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

Shiny blackrock? : r/whatsthisrock