Sapphires and rubies form nearly 40 miles below the earth’s crust. Underground, sapphires and rubies appear as corundum. Specifically, sapphires have a chemical composition: aluminum and oxide (Al₂O₃).The conditions below the earth make the ultimate environment for the wondrous creation of sapphires. Extremely high temperatures, pressure, and earthquakes cause different minerals and rocks to collapse, and combine with other elements to form crystal structures of sapphire and ruby.
The price of Blue Sapphires can range between $800-$10,000 per carat wholesale depending on origin and quality. The most expensive Blue Sapphires come from Kashmir, and Burma. 1 Carat Size of Kashmir Blue Sapphires can easily surpass $30,000+ per carat wholesale. 1 Carat Size of Burma Blue Sapphires can similarly reach $5,000-$15,000 per carat wholesale. Like every gemstone, there are many elements of rarity.