Leon Applebaum Black Art Glass Sculptural Amoeba Swirl “Echo Rock” Sculpture/Paperweight (#1). Black glass with swirls in white, yellow and red. Freeform amoeba shape with a negative space “hole”. Piece does not have a definitive top or bottom, smooth and slightly rounded allover, there is no signature. Preowned piece with a few light scuffs/scratches from use, no chips or cracks. 4 1/4″ x 3 3/4″ x 1 3/8 thick.