He identified this stone, known as the “emerald by day, ruby by night”.

September ushers out the summer's heat and brings in the crisp fall season. This gem belongs to the corundum family. Corundum is inherently colorless, according to the International Gem Society. So, ...

September ushers out the summer's heat and brings in the crisp fall season. Along with several holidays, September is home to the birthdays of millions of people across the globe. Sapphire is ...

From Princess Diana's engagement ring to the Star of India, the September birthstone has lived up to its legendary reputation as one of the world's four major precious gemstones. Best known for its ...