Black Rutilated Quartz 7x8mm Faceted Rice Bead - 15-16 Inch Focals The two most popular classes

The two most popular classes of Australian Opal are Black Opal mined in Lightning Ridge and Fire Opal

Though it is widely known to be untrue

It sometimes features dark brown to black dendritic inclusions that branch like tiny tree limbs through the stone

The boundaries of the included crystals are visible and are known as “phantoms

Black Rutilated Quartz 7x8mm Faceted Rice Bead - 15-16 Inch Focals The two most popular classesRutilated 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