PEGMATITES --- Most pegmatites are composed of quartz, feldspar and mica, having a similar basic composition as granite. Obsidian is a dark-colored volcanic glass that forms from the very rapid cooling ... Pegmatite is a light-colored, extremely coarse-grained intrusive igneous rock. Obsidian is volcanic glass which erupts as a lava flow. THIS PIECE IS COOL AND BEAUTIFUL
Well turns out its not quartz it seems to be some sort of pegmatite, i see its running thru some of the obsidian, also the measurements are 1x1x1 thanks for looking , its a beautiful piece