Black Tourmaline on flat-plated clear Calcite matrix from Afghanistan 65.8g

This rare crystal cluster has several interesting features. The matrix is a series of very clear Calcite crystals that have grown flat (47*69*14mm), perhaps because of space constraints. These crystals flash with rainbows and are UV reactive. At one end there is a stubby 18mm Black Tourmaline crystal that flashes with rainbows. All of this makes it a great specimen.