However, it might surprise you to know that there are precious stones ... 35 most valuable gemstones in the world, ranked by their price per carat weight. And, yes, this list does include diamonds ...

Gemstones are valued based on the Four Cs - color, clarity, cut, and carat. Precious stones include diamonds, sapphires, rubies, and emeralds. Semi-precious stones are evaluated on their rarity ...

“Diamonds are a girl’s best friend”, as Marilyn Monroe sings, dripping in what are - presumably – imitation diamonds. Many such moments have solidified diamonds and other gems as rare ...