Emeralds, a variety of beryl, are among the most valuable gemstones, alongside rubies and sapphires. Just like rubies and sapphires, the rarity and high cost of emeralds have driven efforts to produce their lab grown substitutes. RG Crystal’s lab grown emeralds are created using a process that mimics the natural formation of gemstones deep within the Earth's crust, called Hydrothermal method. This method involves replicating the conditions under which natural emeralds form. Inside specialized autoclaves, a beryllium-rich nutrient solution dissolves at high pressure and temperature. Over weeks or months, this solution recrystallizes onto a seed crystal to form emeralds. Their green color arises from specific trace elements present in the solution. Drawing on extensive experience and proprietary know-how, RG Crystal is able to consistently produce emeralds with vivid, natural-looking hues—ranging from the bluish-green tones typical of Colombian stones to the deeper greens associated with Zambian varieties. These hydrothermal emeralds often exhibit natural-looking inclusions such as jardin (mossy internal patterns), fingerprints (fluid-filled traces resembling human prints), fractures, fogs (cloudy zones), surface-reaching holes, and two-phase inclusions (tiny pockets of liquid and gas). These features closely resemble those in mined emeralds, reinforcing their authenticity and visual character.