Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy. After investing tens of thousands of ...

Astrological birthstones, believed to enhance one's inherent traits, are explored for each zodiac sign. From Aries' diamond ...

One factor is whether it's natural or cultured ... The shinier the pearl, the better. Black opal is one of the rarest gemstones in the world, sought after for its seemingly infinite display ...

Its symptom is a relentless pursuit of opal, which is Australia's national gemstone. For Mr Dunstan that moment happened at age 14 back in 1965 when he found his first opal. "It's a lifestyle for ...