SEDA OPALS BLACK OPAL  This is a natural stone mined in Lightning ridge. This stone is suited to a ring or pendant .It is well polished and showing good fire. High luster well polished. Only those stones with a body tone of N1 to N4 are considered BLACK OPAL NOTE -unfortunately our camera picks up the mauve in the stone which the eye cannot see so please consider this color to be blue if in this stone.