If you are looking for a high-quality piece, experts at the GIA and Brilliant Earth suggest focusing on these "4 Cs":
Sapphire Blue is more than just a colour; it is a symbol of that has captivated humanity for thousands of years [4, 6, 23]. As a variety of the mineral corundum, its iconic hue is born from trace amounts of iron and titanium interacting under extreme heat and pressure deep within the Earth’s crust [17, 24, 26]. The Allure of the Gem Sapphire Blue
: Historically, blue sapphires were believed to protect their wearers from envy and harm [6, 16]. In ancient Greece, they were associated with Apollo, the god of light and knowledge, while medieval clergy wore them to represent the kingdom of heaven [16, 20]. If you are looking for a high-quality piece,
One of the largest faceted gem-quality blue sapphires; near flawless [14, 24]. Smithsonian Museum [14] 563.35 carats In ancient Greece, they were associated with Apollo,