Gold, sapphires and black opals he threw aside like trash.

Lightning Ridge has the largest known deposits of black opals in the world.

The collection was quite deficient in black opals when I gazed upon it.

Small quantities of amethyst, peridot, and black opal are also produced.

Aptly named, it produced the world's best black opals.

Father and son set about finding black opals.

"Those are what they call black opals," Lydia indicated the eye stones.

The black opal is said to be some of the best examples found in Australia.

Spray opened the box and gazed down into the flickering fires of a black opal.

Indeed, ammolite is often used as an imitation of black opal.