They are natural and very dark blue, almost black. Weighs approximately 2.3 grams. Note - We work with A very less profit, therefore, we do not sale knockoff or Limitations. The item "14k Yellow Gold Diamond earring with Natural Dark Blue sapphire, Rare available" is in sale since Friday, July 31, 2020. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Earrings\Diamond".The seller is "afloridastore" and is located in Hollywood, Florida. This item can be shipped worldwide.