5 x 4.5 x 2.5 mm
This famous sea-colored precious stone has long been sought after to fill the true-blue spectrum in the gem world as an alternative to the harder and pricier sapphire. Deep blues are hard to come by, but do hail recently from Madagascar, Vietnam, and Mozambique. Other major Aquamarine specimen deposits of note are Pakistan, Namibia, and Brazil. While always found in the market, truly top quality colored fine aquamarine is scarce.
Brazil is the one country that has the largest network of specimen and gem mining in the world. It is well known for many of the world's best pegmatites, producing high class Gem Crystals. Brazil has the widest variety of multi-colored Tourmaline worldwide, and is semi-regularly producing new colors every few years. The vast array of Quartz varieties from Brazil deserve a book of their own.