Gorgeous Aquamarine Crystal with Black Tourmaline & Feldspar - Namibia

 

This is a wonderful specimen that contains pristine aquamarine crystals and black tourmaline, all of which formed from a feldspar crystal matrix, collected from the Erongo Mountains in Namibia. This crystal association has already been mounted to a display stand.

The entire specimen (stand included) is 1.9" tall, and the largest aquamarine crystal is 1.68" long by .6" wide.

Feldspars are a group of rock-forming tectosilicate minerals. It is also one of the most common minerals on earth, making up nearly 60% of the crust.

Beryl is a mineral that's composed of beryllium aluminum cyclosilicate, with the chemical formula Be3Al2(SiO3)6. Naturally occurring beryl tends to form hexagonal crystals that can reach several meters in size if given the right conditions. Completely pure beryl will be transparent and colorless, while mineral impurities frequently tint the crystals color in most specimens.

Well known varieties of beryl include aquamarine and emerald, although beryl can also be green, blue, yellow, white and red, depending on the incorporated impurities during formation. Red beryl is known to be the most rare form of beryl found and is currently only known to be found in New Mexico and Utah.

Tourmaline is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Schorl, or black tourmaline, is the most common form of tourmaline, and has been used for everything from jewelry to piezoelectric guitar pickups.
DETAILS
SPECIES
Beryl var. Aquamarine, Black Tourmaline (Schorl) & Feldspar
LOCATION
Erongo Mountains, Karibib, Erongo Region, Namibia
SIZE
1.9" tall
CATEGORY
SUB CATEGORY
ITEM
#92702