Precious emerald is sensitive to pressure and vulnerable to household chemicals. Although emerald is one of the harder gemstones, it does still require careful handling, due to its naturally included and flawed formation. Extra care should be taken when handling emeralds as they are more fragile than other forms of beryl. Avoid wearing emerald jewelry when working with harsh chemicals or household cleaners, such as bleach or acid. When cleaning, you can use warm soapy water and a tissue or a soft cloth. Be sure to rinse the stones well to remove all soapy residue.
Avoid ultrasonic cleaners and steamers when cleaning your emeralds as these can remove the oils that are used to enhance the emeralds. Traditional oiling for emeralds is stable but not permanent, which means that most emeralds will need re-oiling every so often to return some of their lost color and luster. Always remove any emerald jewelry before exercising, cleaning, playing sports or engaging in vigorous physical activities. Emeralds can easily scratch other gems, and they can easily be scratched by harder gems such as topaz and sapphires. To prevent scratches, store emeralds away from other gemstones and gemstone jewelry. Store your gemstones by wrapping them in soft cloth and placing them in a fabric-lined box.