Throughout much of history, opals were actually believed to be good luck. The Romans thought that opals were one of the luckiest gemstones and a symbol of hope. ... Despite a long association with good fortune, there are many stories and legends that link this colourful stone with bad luck, the 'evil eye' and even death.

Why are opals considered unlucky?

In the Middle Ages, opal was known as the “magician's stone;” because the stone displayed a variety of colors, it was believed to hold the powers of every gemstone. However, this thought-to-be magical stone later came to be known as bad luck and a symbol of ill omens, noted Corvin.

Who should not wear opal?

The most common opal superstitions

The most often heard opal superstitions include: Only those born in October whose birthstone is an opal are safe to wear them. Opals should never be given or accepted as a gift.