Tourmaline on Quartz

Item Description

This is a broken quartz shard on one side, complete faces on the other. It had grown in tune with a thin tourmaline which later seems to have led to a split along a mid-line in the past which allowed further minute crystallization over the former break face of the quartz (front of the piece now). This thin layer of growth over the conchoidal cleaveage makes the surface shimmer.