While aquamarine is mined in many countries, including Pakistan, Sri Lanka, China, Russia, Nigeria, Madagascar, Zambia, and Mozambique, most of the aquamarine on the market today is from Brazil - and of good quality, too. Some aquamarine has also been found in pockets of the US, including Colorado, Idaho, California, and parts of the Atlantic coast. With that list of countries, aquamarine sounds fairly abundant: however, due to the stone's color being so delicate and pale, it takes a good-size stone to present the aquamarine "look" properly, which means the rough must be even bigger; and while there is a lot of aquamarine crystal out there, good crystals that are large enough to cut and facet can be rare. With that being said, the largest gem-quality aquamarine was mined in Marambaia, Brazil, in 1910, measuring 19 inches long and 17 inches in diameter - that's gigantic!
Aquamarine from Pakistan