This listing is for a Natural Certified Emerald mined and crafted in Colombia in 18K Colombian Gold. Our Emeralds are 100% Natural and Authentic from Colombia, they are not enhanced in any way to preserve their natural beauty. They come from the mines of Colombia, straight to your home. All our jewels are certified by the Colombian Institute of Gemology. 💎🔬 who certifies that the gold is 18 carats and the emeralds and diamonds are natural and from Colombian mines. Why choose natural mined, untreated Colombian Emeralds from JDColFashion? ✅They are rare. Only a small percentage of emeralds in the world are of Colombian origin. ✅They are beautiful.