Natural 3.28ct blue Sapphire set with multiple hues

This heavy 12 piece collection of sapphires is heated only, no dyes, no fillers, just natural sapphire. They have multiple blue hues from royal to cornflower to blue green, all wrapped in excellent lusters. They are well matched in size, measuring about 3.3mm and have a Mohs hardness rating of 9 out of 10, making them perfect for setting. They were sourced from Africa, and are simply beautiful.