Mongolian Dual Core Blue-Green Quartz Sceptre Generator QuartzA new quartz species from Inner Mongolia, only one pocket was found and is now empty. RARE. 140mm ~ 5 1 2" ~ 154 grams The completely unique dual core is a glassy interior, part dark purple and part clear quartz. They are not phantoms, but a hexagonal core that changes colour after a few centimetres. The exterior is also a beautifully gemmy blue green, caused by hedenbergite inclusions, which, when angled in light, displays a lustrous satin sheen. In