PHT on Blue Sapphires! The new way of heating Sapphires!! A GemExperience from ColoreGemma

Have you ever heard about the PHT treatment? Did you know is also used to heat Blue sapphires?
We've been involved in heating sapphires for a while already, and here we'd like to share some insight about this new way of treating them. The Pressure heat treatment is not something new. It's been around for a while and it finally got to sapphires as well. Here is a brief explanation about how it works and how it may affect the stone.