https://deliqagems.com/natural-blue-sapphire-grading/
Deliqa Gems specializes in loose sapphires and fine jewelry. Passionately run by the gemologist, Sasha Gammampila in Melbourne, Australia, sapphires are natural, unheated with no treatments to enhance their appearance; staying true to nature. DeliqaGems specializes in blue sapphires, pink sapphires and padparadscha sapphires all unheated and natural.https://deliqagems.com/natural-blue-sapphire-grading/