What is the birthstone for August? These three gems represent the month of August.

Each month has at least one gemstone. Here is what you need to know about August's birthstones: peridot, spinel and sardonyx.
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6 Gemstones That Can't Be Grown in a Lab

While diamonds continue to plunge in value due to lab-grown alternatives, these gemstones cannot be grown in a lab.

From forgotten valley to museum: This rare, tiny orange gem from the 'valley of rubies' is the only one of its kind across the world

Kyawthuite, a unique mineral, was discovered in Myanmar's Chaung-Gyi Valley in 2010 and recognized in 2015. The single known ...