Rare piece from the Fenton glass company.. these are the last pieces from Fenton, I acquired them directly from the plant when they closed, so there are no more to be found. Very Rare for collectors to sell their stock. I have many more pieces I will be selling from my personal collection. This is an oddly unique Specimen. But it is one of the better light catchers. It weighs 2 pounds 2.6 ounces This Glass Slag Rock is Beautiful, Very rare to find these colors together. It’s mostly clear, has swirls of red, blue, a little green and a splash of black. You can see right through it. Because it is clear the other colors you see in the pictures are objects behind it. Its shape is very unique, it’s 8” wide, 6” high and the thickness of it runs from 1”- 1.5” It catches light beautifully. It cast many unique light designs. Can be used in aquarium’s, terrariums, home decor, outside gardens or any thing you can think of. When the sun hits, it throws sparkles in the room.