Heated only! 4.11ct top blue sapphire set

This 18 piece collection of sapphires exhibits rich navy blue and ink blue hues, and are well matched, measuring between 3.3mm and 3.6mm 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 Kanchanaburi, Thailand, and present glistening lusters.