Price per carat:$.50 - $50 Fluorite is found in shades of purple, blue and green. The stone can be highly polished and cut into a multifaceted gem with the brilliance of a more expensive gem.

Some of these stones are found in just one or two places on Earth, while others are so scarce that fewer than a handful exist worldwide. The red diamond tops the list as the most expensive Diamond ...

Diamond is considered to be the most precious and expensive gem in the world. But if we tell you that diamond is not the most expensive and rare gem in the world, will you believe it? But this is ...

So, what makes black opal so hard to find? And why is it so expensive? Black opal is one of the most enchanting stones in the world, sought after for its seemingly infinite display of colors.