Gemstones Encyclopedia A comprehensive list of the most popular gemstones and their key characteristics LEARN MORE Gemstone of the Day – Agate Agate is one of the oldest known gemstones in recorded history… If you’ve ever seen an agate, you know just how beautiful and varied these stones can be—ranging from clear to opaque, with bands of color that range from white to black. READ MORE Latest Articles Whether you’re looking for inspiration for your next big purchase or just want to learn about what’s new in the world of gems, we’ve got you covered. Load More Learn More Load More GemstonesAgate Stone: Properties, Benefits & MeaningsGemstonesOnyx Stone: Properties, Benefits & MeaningsGemstonesCarnelian Stone: Properties, Benefits & MeaningsGemstonesChalcedony Stone: Properties, Benefits & Meanings