Heated only! 4.53ct top blue sapphire set

This 20 piece collection of sapphires exhibits rich sapphire blue and cornflower blue hues, and are well matched, measuring between 3.3mm and 3.8mm each. They were heated only, with no dyes or fillers, and have a Mohs hardness rating of 9 out of 10. These gems were sourced from Madagascar, and present glistening lusters.