The Complete Emerald Stone Guide: Understanding Its History, Formation Process, Quality Criteria, Pricing, and Sources
Home In the introduction to emeralds, it’s important to note that emeralds are a specifically colored green variety of the mineral species beryl, with the chemical formula Be3Al2Si6O18. This species also includes many other varieties. The characteristic green color of emeralds is due to trace amounts of chromium or vanadium. There are several types of […]