a black heart

This heart is pitch black; dark red blood still drops from the severed aorta and venous. A pattern of barely visible deep green veins stretches like a net over the black heart. Globs of undefined slime keep oozing from the heart, as if it was not entirely dead.

It is a black heart.
It weighs three pounds.

You identify a black heart.
It weighs three pounds and five ounces.
Its keywords are heart, black, and slimy.