Heated only top blue 3.99ct Sapphire set

This is a 13 piece set of accents cut from pure high grade Ceylon sapphire that was heated only, with no dyes or fillers, just pure sapphire. Measuring from 4.3x3.5mm to 4.7x3.6mm each they're well matched in size, and are filled with cornflower and platinum blue hues and glittering flashing. They have a Mohs hardness rating of 9 out of 10 and are perfect for setting.