A "Bitterwsweet Orange" slag glass pedestal bowl from L.E. Smith Glass Company.  The bowl measures 6 1/4" across the rim, 3 5/8" across the pedestal base, 6 3/4" high, and nearly 3 1/2 pounds.  The bowl likely once has a lid which is not present with this piece, but is still a stunning piece on its own, and shows no flaws or hint of use.

Slag Glass

Slag glass, otherwise known as marble glass, is opaque pressed glass streaked with color.  The word "slag" is derived from the practice of 19th century English glass makers adding slag from iron-smelting to molten glass to create different designs and effects to the glass.