Emerald: The World's Most Popular Green Gem, May Birthstone - Geology.com
https://geology.com/gemstones/emerald/
Web ResultADVERTISEMENT. What Are Emeralds? Emeralds are gem-quality specimens of the beryl mineral family with a rich, distinctly green color. They are found in igneous, metamorphic, and sedimentary rocks in a small number of locations worldwide. For over 5000 years, emeralds have been one of …
DA: 12 PA: 84 MOZ Rank: 90