However, it might surprise you to know that there are precious stones that are rarer and more expensive than these popular ones. A number of the most valuable gemstones are new discoveries that ...

From Tanzanite to Benitoite, this article unveils the five rarest gemstones in the world that hold more than vibrant colors.

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 ...

Precious Metal Gems (PMGs ... high-end collecting and remain among the most coveted cards from the era. But what is it that makes these cards so valuable? Let’s take a closer look.

Most gemstones are found at depths of 5km to 40km ... What is the 'new fact deep inside the Earth' that was trapped inside the ultra-rare diamond? - GIGAZINE Along with diamonds, peridot is ...

High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. Over 90% of black opals come from Australia, but they aren't easy to find.

Of the three, tanzanite is relatively new to the world of gems. According to the Geological ... with its blue variety being "considered the most valuable." The stone is often considered "velvety ...