This lot is for two pieces of our famous Scottish smokey quartz crystal chunks. These come from the mountains near Aberfeldy and range in colour from clear to black. 
The smaller piece of Scottish rock here is darkest and has clarity to it, under a layer of podge-like material. We typically find tourmaline in the Highlands in that podge like mineral but not this time and very rarely. This rock looks very dark. 
The larger piece is not as dark. It is a smoky grey with lighter and darker patches throughout. Both pieces have a little mica schist dusting.