Uranium Glass Slab 5lbs 5.4oz coe 100

This is fun stuff to play with but it is NOT COMPATIBLE with other glass. I've used it myself to make hearts, kids LOVE them. Has chunks missing from two corners. SAMPLE HEARTS NOT INCLUDED

Slab weighs 5lbs 5.4oz. 

1" thick, and 7" x 7" not including the two missing corner chunks.

Glass Casting Billet Melting Temperature - 820° - 860° C (1508° - 1580° F)
Glass Casting Billet Annealing point - 475° C (887° F)