Some more popular Beryl species are Aquamarine and Emerald. The hardness of this stone (7.5-8) makes it a great fit for any type of jewelry.
Hardness and toughness
Aquamarine is 7.5 to 8 on the Mohs scale, so it is a durable gemstone for jewelry as long as it is treated with care to protect it against scratching and hard knocks.
Heat exposure is not recommended for aquamarine, but the color is stable against light exposure. Aquamarine can be attacked by hydrofluoric acid.
Warm soapy water is always a safe cleaning method for aquamarine. Cleaning by ultrasonic and steam cleaners is usually safe unless the stone has liquid inclusions or fractures. Very Rarely, aquamarine might be fracture filled. These stones should only be cleaned with warm soapy water.