Each month has at least one gemstone. Here is what you need to know about August's birthstones: peridot, spinel and sardonyx.
While diamonds continue to plunge in value due to lab-grown alternatives, these gemstones cannot be grown in a lab.
Kyawthuite, a unique mineral, was discovered in Myanmar's Chaung-Gyi Valley in 2010 and recognized in 2015. The single known ...