Natural emeralds are precious gemstones known for their vibrant green color, which comes from trace amounts of chromium and vanadium. They are a variety of the mineral beryl and are highly valued in the jewelry market. Natural emeralds often contain inclusions, which are internal flaws that can enhance their character and uniqueness. These gemstones are primarily sourced from regions like Colombia, Zambia, and Brazil. The quality of an emerald is determined by its color, clarity, cut, and carat weight. Unlike synthetic emeralds, natural emeralds are formed over millions of years in the Earth's crust, making them rare and sought after by collectors and enthusiasts.