Gemstones have been a topic of fascination to human beings for centuries, not just for their beauty, but also for how rare ...

Rare gemstones like Alexandrite, Tanzanite, Larimar, and Benitoite offer unique beauty and properties. Alexandrite changes color, Tanzanite aids spiritual growth, Larimar calms stress, and ...

No matter the reason for their price, here are the 35 most valuable gemstones in the world, ranked by their price per carat weight. And, yes, this list does ... are much more rare and costly.