3.1" Wide Aquamarine Crystal On Muscovite Matrix - Pakistan
Here is a large, gemmy, 3.1" wide Aquamarine crystal resting on a bed of Muscovite. It was collected in the Baltistan region of Pakistan. The entire specimen measures 5.5 x 4.9"
Aquamarine is a blue-green variety of beryl. Oddly enough, it owes its color to iron(II) and iron(III) cations within the crystal lattice, of which iron(II) is responsible for the blue color, while iron(III) is responsible for the yellow color. The color vibrance and hue are dependent on the concentration of these cations, or lack of one or the other. The presence of both cations in the right position within the crystal lattice, can result in a deep blue colored crystal that is known as "maxixe".