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 ...

The Smithsonian’s National Museum of Natural History has acquired the 2.33-carat "Winston Red Diamond," as part of the “Winston Fancy Color Diamond Collection.” ...

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 ...

In the vast world of gemstones, only a few manage to captivate the ... The Unparalleled Rarity of Gold Sheen Sapphire Gold Sheen Sapphire is recognized as one of the rarest gemstones on Earth, with ...

Its rarity, combined with its ever-increasing demand, makes it one of the most sought-after jewels of the moment.

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.