Black Tourmaline A cut base This stunning Indonesian Java Agate

This stunning Indonesian Java Agate features unique banding and milky tones

North Carolina is one of the world's premier destinations for finding whole

Septarian are carbonate rich concretions containing angular cavities and cracks filled with hardened material

This display piece has brilliant contracting colors and is polished into a freeform

Black Tourmaline A cut base This stunning Indonesian Java AgateBlack Tourmaline, scientifically known as Schorl, can originate from the crystallization of molten rock deep within Earth's crust. It has a hardness of 7 7. 5 on Mohs scale with a trigonal crystal structure. The black color is often due to the presence of iron impurities within the crystal structure. This particular specimen is from Namibia, South Africa. Measuring . 6 inches in height, 1. 2 inches in length, and 1 inch in width. Weighing 1. 2 ounces.