Natural blue sapphire is a gemstone variety of the mineral corundum, an aluminium oxide. Natural sapphires for sale
3.47-carat, trilliant cut, natural Ceylon blue sapphire
Unheated natural Ceylon cornflower blue sapphire. This stone has not been treated in any way.
2.73-carat, pear-shaped, natural cornflower blue sapphire
Natural unheated blue sapphire
Unheated natural blue sapphire from Sri Lanka.