Aqua is a variety of the mineral species beryl, which also includes emerald and heliodor, or golden beryl. The rare cherry hued bixbite is also a beryl. Depending on other elements mixed into the beryl mineral in its formative stage, a different color will result.
|Biel's close-up on her Tiffany aquamarine earrings|
Aqua is found around the world. Here's a rough crystal specimen from Pakistan.
If you like your gemstones large, sashay on down to Brazil, where the most massive aquamarine crystal ever was unearthed in Minas Gerais, Brazil in 1910, weighing over 110 kg. Its dimensions were 48.5 cm (19 in) long and 42 cm (17 in) in diameter. That's a lot of watery-blue!