2. Rubies

2. Rubies

World’s Most Expensive Gem Stones

High-quality rubies have recently joined this list of most expensive gemstones, as they now average more than $1 million per carat. The Sunrise Ruby sold for $30.42 million in 2015. That’s 1.2 million per carat for this magnificent 25.6-carat stone.The Sunrise achieved such lofty status thanks to its intense color, immaculate purity and well-balanced design.