Tektite Natural 8mm Round - 15-16 Inch Terra Agate and is similar to Mahogany

and is similar to Mahogany

Pietersite has been called the Tempest Stone for its colors of deep blue and gray with metallic gold and flashes of brilliant chatoyancy as it catches the light

Jade refers to an ornamental mineral

Rutile is the mineral name for natural crystals of titanium dioxide

Tektite Natural 8mm Round - 15-16 Inch Terra Agate and is similar to MahoganyTektite is a natural glass formed by meteorite collisions with Earth. When moving through the Earths atmosphere, a meteorite builds up heat that is then released into the terrestrial rocks with which it collides, causing the rocks to melt and combine with the remains of the meteorite, forming Tektite. It is composed of silicon dioxide, aluminum oxide and other metal oxides.