Black Rutilated Quartz 10mm Round - 15-16 Inch BirdsEye colored by trace amounts of

colored by trace amounts of chromium and/or vanadium to range in hue from yellow to green to blue to green

a warm peach

while today it is primarily mined in Africa

A natural blue form of calcium sulfate

The stone can also include its namesake sage green

Black Rutilated Quartz 10mm Round - 15-16 Inch BirdsEye colored by trace amounts ofRutilated Quartz is a silicon dioxide mineral with unique needle like inclusions of Rutile. These needles usually appear golden, but can also appear silver, red, copper, or black and can be distributed randomly or in bundles or star like formations. Rutile is the mineral name for natural crystals of titanium dioxide, which may contain iron oxide. When the level of iron oxide is high, the inclusions appear more golden or copper, when it is low, they