In the world of jewelry, opal inhabits a space reserved for few gems. It is classified as a “mineraloid” because it lacks crystal in its mineral makeup. It doesn’t sparkle or glitter, like most ...

There’s a good chance you might not, because though their intricate appearance sets them apart from other gems, opals have fallen out of favour in fashion over the years. While they experienced ...

Gift 5 articles to anyone you choose each month when you subscribe. Thirty years ago, I didn’t like opals, they were a little ‘common’,” says Jacqueline Karachi, Cartier’s creative director of high ...