Heated only! 12.73ct royal blue Sapphire set

This 27 piece collection of sapphires exhibits rich royal blue hues with swirling saturation, and are well matched, with oval cuts measuring about 5mm x 4mm 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 superior lusters.