“A dazzling blue mystery”: Scientists finally reveal where sapphires actually come from

Scientists have uncovered the origins of sapphires, revealing that these stunning blue gemstones form deep within the Earth’s crust through volcanic activity. Research led by geologist Axel Schmitt from Curtin University studied sapphires from Germany’s Volcanic Eifel region, finding that they crystallize under extreme heat and pressure. Magma then transports them to the surface. This discovery, published in July 2024, offers valuable insights into sapphire formation and has significant implications for the gemstone industry.