Opals have been the favourite of many for a long time. The glittery gemstone is known for its great brilliance and exciting color patterns. Formed due to heavy rains on silica-rich grounds, the gem is found in arid, dry regions. But in the past, people had various assumptions regarding its origins. As the gemstone was considered magical and precious because it exhibited so many colors, the ancient people were intrigued by the mesmerizing beauty and considered it a prized jewel.