Quartz | Barras-Gautier-Min.https://static.wixstatic.com/media/daf8af_9e427f1d946b418fa213512ca3a6af66~mv2.jpg/v1/fit/w_500,h_500,q_90/file.jpg Dimension: 6.5 x 6cm Origin: Remuzat, Drome, France A great originality for this Quartz crystal embedded in its matrix (having in addition a natural and old fracture). This natural monocle is a real kaleidoscope!