Blue Peruvian Opal naturally occurs with swirling patterns of deep blues
this unique and earthy Petrified Wood Agate slab specimen is perfect for gift giving or keep for yourself
It is a particularly unusual gem because it exhibits a special optical property known as tenebrescence
It can range in color from pale pink to deep rose or even rusty red tones depending on the concentration of Manganese
Lepidocrocite forms when iron-containing substances rust underwater
Copper Rutilated Quartz 3mm Table Cut Cube Bead - 15-16 Inch 10x20mm Blue Peruvian Opal naturally occursRutilated Quartz is a silicon dioxide mineral with unique needle to 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 to 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,