When you think of expensive gemstones, what comes to mind? Most people think of the Big Four: diamonds, emeralds, rubies and sapphires. However, it might surprise you to know that there are ...

Discover the extraordinary Gold Sheen Sapphire, a rare gemstone with a striking golden glow. Learn about its discovery, ...

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 ...

The shinier the pearl, the better. Black opal is one of the rarest gemstones in the world, sought after for its seemingly infinite display of colors, compared to common opal, which is usually one ...

Its unique “pigeon-blood” stones are the most expensive coloured gems in the world – last year the so-called Sunrise Ruby sold for a record US$30.3 million, over US$1 million a carat.

The Gold Sheen Sapphire, a recently discovered gem, has swiftly claimed the title of the second-rarest gemstone on Earth. Its ...